Thinking about building an airplane and would probably do the “quick build” route in order to enjoy it sooner plus having plenty of knowledge around so I don’t screw something up. So, with that said my perfect plane would be an evolution turbo prop but that is out of reach at this time. There are others I can do but some are what I consider slow. I want to go cross country and needs to be IFR. Thinking of:

RV 10
RV 8
Sling TSI

Sling seems very efficient and modern but the Vans are faster. What other kits are out there I should consider? Prefer 4 seat but would not be opposed to a 2 seat if I can take a little luggage

Check out
https://www.vansairforce.net/

The RV-8 and RV-14 seem to meet your goals if 2 seats are OK. The RV-10 is a tremendous aircraft, but even as a quick-build will take a ton more time that the other RV's because of the cabin top and doors which involve a lot of fit and finish work. The Sling is interesting, but you may want to sit in one and the RV-10/RV-14 before making a decision. The -10 and -14 are both nice and wide with plenty of room. The Sling (while having 2 more seats than the -14) is more of a 2+2 aircraft, IMO.

Appreciate the link. I will register and do some reading.
Good point on sitting in them. I did see a video that showed the RV 10 had more room inside.

I'm 2 years and 11 months into an RV-14 build. It has been one of the coolest things I've ever done, yet at the same time, frustrating and at times, mentally draining. I've devoted a lot of time to building and I'm almost done. A HUGE amount of credit goes to my wife who has taken care of the household without a single complaint that I've been at the hangar.

The Vans system is solid. They is a reason they have so many flying aircraft. They produce a great kit and there is a lot of support, both from the factory and other builders. Vans has had more than its share of hurdles in the past two years but I believe that they have cleared the hurdles and will be a stronger company going forward.

There are also a fair amount of aftermarket mods you can do but be advised, those add time.

Harmon or F1 Rocket?
Beefed up RV-4 with a Lycoming 540 in the nose. They get up and scoot.

I window shopped planes at OSH with my kid. I tried on the Sling and it seemed cool, but there were things I didn't love. The door sills are high, so visibility seems not as great and it didn't feel roomy. Baggage door is real small, not that it's huge on the RV-10. Performance seems... meh. On the other hand, it's only a 160 hp Rotax while the RV-10 uses a 235 hp Lycoming.

If it's practical for you, I strongly recommend a visit to OSH to spend a few days checking out the options, actually sitting in them, etc.

Just my opinion, you should decide to build because you like to build things. Don't build if the only goal is to have something to fly. If in that category, you are far better off buying something factory built, or a homebuilt already completed by someone else.

The vast majority of kits sold are not finished by the original buyer of the kit. They either give up and sell the partial project, or get tired and it just sort of fades away. Buying someone else's partial project can be a good way to get started if you know what you are looking at.

I'm building my 3rd cub now, scratch build to plans, no kits. The first 2 each took 5-6 years to complete and this one will be similar.

I second that. Building an airplane is for people who want to build an airplane. It’s not a quicker, cheaper path to ownership. That’s a recipe for giving up. Yes, many homebuilts offer more performance than factory offerings, but you have to want to BUILD it in order to finish.

As for the cost, by the time you add up the price of the kit, the engine, prop, avionics, instruments, etc. you’re over $100K easily, which brings used homebuilts and factory airplanes into reach.

Another word of advice: build it in your garage or basement. If you have to drive to a hangar to work on it, it’ll take much longer.

There are builders, and there are fliers. A good number of builders experience a phenomenon of emptiness at not having anything more to do at the shop once their project is done; they sell their finished craft, and order the next kit. We used to call them "repeat offenders".
It is the rare builder who goes on to fly his creation, but must retrain in his flying skills after many years in the building process. Much respect for these folk.
I have noted in the VAF site that some builders express their appreciation for their spouses, who loyally hold up the fort while the other is fully immersed in building at the hangar or garage, abandoning the marriage thing.
I would think it interesting to make a study of how many divorces have occurred directly related to aircraft homebuilding. Perhaps the kits should come with a warning: "Caution, building this airplane can be hazardous to the health of your marriage".

Agree with these guys. You can buy a nice Comanche and be flying next week for half of what you'll spend building an RV10 that you might finish in a few years if you've got a lot of free time and are dedicated. The reason so many guys build more than one plane is because they enjoy building as much or more than flying. The primary motivation has got to be the journey.

That said, if you really want to build and get to the end result fastest the Sling with the factory assist option is the way to go.

That's my old Rocket. 212kts, 3000 FPM. A really nice flying airplane!

I'm obviously biased, but my mission was cross country, IFR, 4-place and fast. I went with a Velocity XL-RG. 200kts on 13.6GPH below 10,000' (because the farthest west I'd flown and was planning to fly was Dallas up to Minneapolis). And I didn't need short or turf strips.

It's a very comfortable long distance aircraft. Two doors make for easy ingress and egress for the front seat. Back seat is about the same as most one or two door 4 seat aircraft. Baggage access sucks because there's no baggage door.

I get the smaller RVs, but I never really understood the RV10. If you want a four seat, 172 knot 15 gallon per hour airplane, it was built 60 years ago. It's called a S35 bonanza. It's even bigger inside.

I get the smaller RVs, but I never really understood the RV10. If you want a four seat, 172 knot 15 gallon per hour airplane, it was built 60 years ago. It's called a S35 bonanza. It's even bigger inside.