I have the 2 finger trigger shoe, and Pro Touch Trigger job. The barrel is spiral ported. Some say it has a limited upgrade path, and, well, it does. BUT, it doesn't need any upgrades. I can crank out 11bps, so fire power is not an issue, as many believe it to be.
Weight is no trouble, it balances fine.
Get one instead of some Angel or Cocker, it will cost you less in the long run, and will give you more performance and less hastle. God this is a nice gun. Not quite practical, a bit heavy, shoots a lot of paint. Shoots paint like crazy. I love this thing and everyone at my field loves it too.