I bought a Brooks to go on an old steel Road bike, and when I realised how comfy it was I moved it to my MTB. I will be doing my second Sani2c on it in a few weeks time and will not change! I got mine from Steadler in Munich for 80 Euros.
From last years results, E - 96 sub 3's, F, 30, G,17, H, 16 and the famous I group, 8. So just keep close to the front of the group and you have a chance.
