I gave single ply a shot. I recently gave it up to compete with a crew, raw. I'd like to build my base up a tad more as well and I have a raw total I'd like to achieve first. After that, I'd like to go multi-ply over single ply. If you're going supported, might as well go all out and get the biggest numbers. Plus, single ply is uncomfortable as hell. My raw numbers were 550/300/525 and single ply with a couple months training was 600/365/560.
It's really personal preference. Rodja is right, it's a completely different style of lifting, as much as the support helps-it still takes a lot out of you. Be prepared for longer sessions, cramming yourself into gear, your thighs covered in bruises and marks left from the bench shirt.
I got Inzer everything because it was cheap and they have a "bargain rack". I got half off a bench shirt and it looks/feels brand new. I'd probably go with Metal or Titan though. Rodja already stated he's a Metal fan, and I know two other geared lifters who both swear by Metal. Powerliftingwatch.com sometimes has stuff for sale people are getting rid of.
PROness. You're an *******. You gave the OP your opinion. I don't think he started this thread to create arguments over this ****.