The Callisto is a great saddle, especially for climbing but I just can't seem to get it to fit right. I've tried tilting up , down, forwards and backwards and just can't seem to find the sweet spot. Its a perfect length and width though. I just wish it was a comfy as a Butterfly or the butterfly wasn't so wide in the back.

As fas as they Hayes go, I don't know what to telly you other than I believe the Comp is the Hydraulic version and the HFX mag is the mechanical one. Have you ever checked out MTbr.com? They specifically have a brake forum and i bet if you asked over there, you'd get a lot of great responses. Oh and Ridemonkey.com has a lot of great info too.

Ah, Chris King! I was so tempted to get the Rasta! Then seriously considered red but since I have a Cane Creek S-2 which is working perfectly fine, I figured it wasn't worth spending another $100.

So, what frame did you get?! You still haven't told us!

Oh, by the way, I forgot to mention, I'm using SRAM X.0 shifters and der with an XT front der.. Got a candy red Manitou Black Super Air fork. Very nice looking bike, I might add