Another vote for the NXO Revolver. BagBoy bought out Proline (or at least the rights to the GripLok Technology).
The first bag I ever bought (beyond the cheap one that came with my starter kit) was a ProLine GripLok. I was the quietest golfer on the course (no
clubs banging - ever).
Granted, I don't think they're good as carry bags (the first one the top part came apart and a strap was working the threads loose, the second one the threads actually gave halfway through a round and I completely blew a strap... at this point I moved to Ogio).
But for cart bags, the NXO is the bee's knees. I recommended one to my mother and she's in absolute love with it. It's the one I'd get if I was to use a cart.