I've got a G2C, and a G3 Taurus. I like both of them. They're the first Taurus semi-auto's I've owned. Not a problems with either shooting factory ball or HP, or my reloads either. They just chug along. I shoot the G3 a little better...maybe...but it's a full sized gun vs a compact. They're both fairly light, they both have decent triggers with the G3 being a little better, but not much. The G3 is also the T.O.R.O. model (optical sight ready) and came with four mounting plates, but I don't know that I'll ever put a "dot" on it. Oh, just remembered the G2C has adjustable sights. Something I was surprised to see on such an inexpensive gun. Not reallly a deal breaker or maker on a compact carry gun, but nice.
I looked at a G-4 but I was trying to spend the least I could and the 2's and 3's were "on sale" so they got the nod. The G4 looked/felt nice though.