Hey, I am buying myself a new 2007 Monty 221TI full bike and am wondering what are the differences between it and the Monty 221PR 06... I was riding the pr for half a year before it started cracking at the bb in 3 or 4 different spots... dealer here was telling me that it is because when i swapped the disc brakes to the magura martas with monty brake pads, the frame couldn't handle the strength!!! monty brake pads not suitable for monty bike!!! anyway, my 221ti is on the way here and i was wondering, what is the differences between it and my old pr... i actually like my old pr a lot... only problem is it feels very heavy n draggy on the rear wheel so i was wondering whether the 221ti feels like that cos it's supposed to be same geometry n all... so what accounts for the really big price difference other than the hope dual disc brakes and the titanium stuff?