Daniel,
As you are starting to hear, there is no right answer to your question. I was able to get my RV-10 painted for about half the price that I would have been charged by some of the more popular paint shops like Glo Custom. Additionally, I also did have to fly half way across the country and by a round trip plane ticket, which makes the savings even greater.
I did find a painter whose day job is a painter at the local GMC dealership. There is some risk using an auto painter, because they tend to want to paint a little heavy. I lucked out in that this painter has a 2500' grass strip, a Stinson, a Hyperbype, and a Fokker. He was well versed in how to keep an aircraft light.
Transportation to the paint shop caused me to get a little creative. A RV-10 won't fit on a standard trailer. Most tow truck companies freaked out when I asked for rates to move the fuselage. I quickly learned to simply state I have a vehicle with a 8' wheel base that is x' long and y' tall. I also had to beg and borrow trailers from friends and friends of friends to get the other parts transported.
There were parts of the process that were a royal pain in the rear. I have four colors, white base coat, silver metallic, red metallic, and gray metallic. It was a four to five day process for each assembly since each color had to be painted and masked separately, then clear coated.
To help keep costs down, my wife, daughter, and I assisted with the prep work and masking. Laying out the paint masks for the compound curves was a pain and sometimes lead to very emotional conversations on what needed to be done or corrected. My wife got frustrated because she had problems seeing the big picture and why things were done in a certain order. However, now that the RV-10 is all painted (except for the wheel pants), she now has a very high sense of pride and ownership. When she sees the final products, she knows it was a lot of her hard work is what made it look nice.
I've also got to fess up, as many of you know, I had surgery on my achilles' tendon about half way through the paint job. My wife and daughter had to pick up my slack. They are still helping me with the final assembly since they now too see the light at the end of the tunnel and what to fly as much as I do. I'm glad that the last few months turned into a family project.
Like everything else in the project, it all comes down to your goals and objectives. How much do you want to do, how much is your budget, what are your time constraints, and are you building a show plane or something to go get a $100 hamburger?
At the moment, I am very satisfied with the route I went. I don't have a show plane, so I wasn't overly concerned about getting a perfect paint job (which I don't think exists). With all that said, I think my paint job looks great from 1-2'.
Photos are on my build site if anyone wants to take a look.
Good luck with your paint, with whatever decision you make!
bob