Who here has ran both a Fatty & Gnarly on there bike? I'm in the market for a new pipe on my 03 KX 250. I'm thinking of going with the Gnarly for the first time. I've had both the Pro Circuit Works & FMF Fatty on this bike and like both, but I'm still looking for more bottom end. My question is just how much bottom end is gained over a Fatty & how much top end is sacrificed? I'm thinking the Gnarly may be for me. I ride 50/50 woods/track & I'm not one to keep the bike wound up all the time, even on the track.