god forbid anyone should actually answer this guy's question.
god forbid a company should advertise its products. ugh.

here's my cervelo experience:

i bought a used aluminum cervelo soloist team after speaking to some people about it - aero and stiff. they said they loved it.
when i got it, i found it incredibly stiff, which meant that it was very responsive and accelerated well. i felt extremely fast on it.
unfortunately, it developed a crack in the seat tube which i believe was a design flaw.
cervelo swapped out the 2006 aluminum frame within a week, no questions asked, set for a brand-new, 2011 S2.
so, their customer service is nice too.

although i think both my bikes are great, i find my cervelo to be stiffer than my Felt, but i get the same aero benefit.
it's the kind of thing where i feel like i'm holding the bike back, not vice versa.
I'm not sure if i'll get another cervelo for my next bike, but it is no-doubt a very nice bike.