I am torn as to which pipe to buy for my 2002 YZ426F - Dr.D or FMF Titanium4 with titanium SX header/mid. After reading all of the rave reviews about the Dr.D pipe here on TT I am tempted to lean that direction. However, I like the weight savings by going with FMF. Does anyone know if the performance of the two pipes are similar? Is the weight savings by going with titanium outweight the Dr.D pipe?