yeah just to name a few people who can do paint jobs for you on Pbc, Dalum, Sin, and Whitewolf can do paint jobs for you. I personally like the one of a kind gun so I would get a STS and get a paint job put on it. To contact one of these people who do paint jobs you can go to http://forums.paintballdojo.com/
and use the search option to search for them.
Anyways get whatever gun you like, and don't let other people decide about what you want to get.
The piranha pro is the same thing as a sts except it has a metal double finger trigger and a nice paint job(and as you know it cost more).