Actually the Cervelo geo is horrendously facet IME. Great if you ride straight roads with the occasional crit. Not so stable if riding the twisty descents of the European mountains. In short, Cervelo are probably the liveliest geometries around in tandem with Canyon,, the BH Ultralight and a few others. I prefer a more neutral and stable design.
I'm curious how other riders of the current generation R3/5 feel about this. I happen to think that Cervelo decreased the trail of the R3/5 too much when they revised the geometry in 2011. The bike (in my case a '12 R5) is still stable, but for me is noticeably "twitchier" on the fast, twisting decents I encounter in the foothills around Denver. With a Zipp 303 on the front and swirling cross winds, it can get downright scary. By comparison, I never felt this with the old geometry on my '07 R3.
Personally, I was hoping for revised front end geometry. An optional fork with less offset (say 40mm rather than the standard 43mm) could be an easy way to dial in a bit of additional stability. While I'm at it, I would have liked to see Cervelo dial back the tall headtubes a bit, as well.
All that said, I'll stick with my current R5 for a bit longer.