Ok guys please help... I want to get a Gen 3 23 and am currently checking out the RTF vs. the standard grip. Are there 2 versions of RTF models in Gen 3? I have already read about Gen 4 and understand the less aggressive RTF. I'm just confused about reading so many posts detailing RTF and RTF2 on Gen 3's. I originally thought the RTF 2 had fish gill like serrations and that was the only difference?