GTX cuts harder, GTI slides more in hard cornering from what I've heard. It seems to be true with my 03 GTX vs my old 97 GTIs but since both hulls have changed with respect to your year, I'm not sure that's a good comparison. My neighbor has the 2015 or 16 SE 130 and loves it. They cruise more and prefer the looser handling. He hasn't tried my GTX yet because I'm still getting the pump fixed. But when I do, I'll let you know what we think about the difference.