How about an H2? Personally, they arent for me, but they do turn heads. If you put a set of nice wheels on it and letter it up, you're sure to get noticed in it.
I dont know how much money you are looking to spend, but if it is less than what an H2 costs, I'd suggest a Scion XB. They are cheap, reliable, and functional. No, I dont own one, but we used to have a tint guy at work (who did auto/commercian) that worked out of one without any problems.
Not much of a head turner, but perhaps you could also look at a Focus SVT. They are pretty fun to drive, and have a ton of room in the back. I've detailed out of my 2 door ZX3 before with ease. I dont make a living doing it, but I fit my lights and all my other necessary stuff in the back NO PROBLEM. The back seats fold down almost completely flat and it sure makes it easy to load your stuff into.
HTH