Let me take one more cut at this because I know this subject can be overwhelming when you first peer into the experimental universe.
Advantages of RV-10 (some of these are dependent on whether or not you build or buy...I said this was kinda complicated....)
1) A lot of performance for the price
2) Access to reasonably priced, amazing avionics that have not yet trickled down to the certificated community at less than breath-taking prices.
3) Legality of owner-performed maintenance.
4) The largest, most enthusiastic, well-informed community of owners/builders anywhere. http://www.vansairforce.com/community/index.php
5) Excellent factory support
6) Outstanding flight dynamics
7) Freedom from stifling ($$$$$$$) regulatory restrictions of the certificated universe
8) Immeasurable pride of ownership, especially if you build it
Disadvantages of the RV-10:
1) You gotta either build it or buy from a limited pool of aircraft
2) Each RV-10 is unique, no type certificate.....buyer must be very informed.
3) Not every potential passenger, family member or A&P will share your enthusiasm for experimental aircraft....some will think you have a death wish if you fly in one (they all have heard of John Denver.........)
4) Uhhhhhhh..can't think of any others....
The best advice I can offer is for you to get acquainted with local RVers. We are quite proficient at providing $140,000 rides in our planes.This also gives you insight into the lifestyle of the experimental community and differences from those who depend on the gov't to assure the safety of their ride. Experimental is for independent-minded individuals who want to broaden their scope of aviation knowledge and who are self-starters and not afraid to take the path less traveled.
It is a great ride!