I would take an sp-1 over a tippmann any day.
I say get one if you can find one cheap enough. They'll work fine as long as learn how to maintain them the proper way and don't do stupid things like over pressurize it. Also, don't use co2 with them because that's a sure fire way to screw 'em up.
Really, the only thing you have to do to a sp-1 is lube it, and maybe change an oring now and then, and that's it.
Sometimes you might have to take the reg apart to lube it, but that's a piece of cake also.
As far as Smart Parts goes, they'll be back in business eventually.