I just added a brand new WR450F to my extensive Yamaha family and completed the first 100 km on it. I uncorked it and it is really a great Enduro Bike. My last bike was (is) a 2006 YZ250F, that I used for enduro purpose, I really liked (prefer) the plushness of my YZ250F suspension, very good, specially the rear. My new WR450F is very harsh (even releasing the compression clicks), both the seat and rear shock. I realize that the rear suspension still needs to be broken in, but question whether it reach the level of my YZF '06? I disassembled the link of the WRF '08 and greased it (was quite dry indeed). It seems that the 2006 YZ seat is much more gelly and really has an elastic feel although it has already 70 hours on it. (I compered it to other WRFs of friends too) Now, I will sell the YZ250F soon yet wondered whether I should swap the seat (as a whole) or just the foam. Is the seat material (foam quality and or density) used in the WRF '08 different than the YZF '06. Does anybody on this forum knows? Another thing is the rearshock. The YZF '06 has a Titanium coil wheras the WRF '08 comes in steel. I prefer the plusshy '06 YZF feel . Should I chance the rearshock? Or just the coil? Is it interchangable? Other than some minor weight difference between Titanium and Steel is there any other difference? Or should I put more milage on my WRF and the bike will become as good as or better? The WRF has a PINK dot on the spring, I have to check the YZF spring rate still to see if any major difference is there still). Your coments are really appreciated!