I have tried both. I use the 2004 and me mate 2005.
Right the 2004 i think look better and feel a bit better on the lever but the tpa always brakes.
The 2005 i think feel nice and sharp and the tpa never brakes brcause it is protcted. My mate has never ever broken his for about a year !
I rekon you should go for the 2005 ones (Y)