I was leaning towards the FMF Desert pipe. I was considering the Pro Circuit pipe because I see most of the pro supercrossers running them like Ricky, Bubba, etc. so I figured it must be a good pipe, but then again, I dont spend much time on a track. I will save the porting for when its time for a new top-end which wont be for quite a while since this thing seems to be in tip-top shape and in reality, it makes plenty of power for me. I just wanted to get the best pipe for the money. Thanks for the info!