I've been racing Stumpjumper Hardtails for almost 10 years. I waited until 2007 to go to Carbon.
The Stumpjumper Carbon HT is a race bike. It feels like a race bike, it rides like a race bike, and even I have managed a podium spot or two on one.
There might be better out there, but not much, especially when you factor in Specialized's superb after sales support.
The Scott Scale is nice, but to me, it's a little 'old school'.
The Trek is nice, but unchanged AFAIK for a long while.
Lapierre's are very nice. I see a lot of those at races here in France. They're always slightly heavier than they look.
I'd get a Spesh.
SB