I've been riding the Terry Isis Pro since the wild goose chase ride last year. It was an upgrade from my Trek 1000. I am very happy with the bike over all though sometimes I feel like the cockpit is too tight. They told me it's because I was used to being "stretched out" on the Trek - 1200miles later and I'm still not sure. I slid the saddle back and then just the other day pulled it forward again. With the 600 wheels it looks like a toy bike compared to everyone I pull up next too.
The ride is beautiful though and it shifts like buttah.. So all in all I'm pleased - just not sure I'd go the WSD route again. I think at 5'5 I'm right on the edge of whether WSD works for or against me.
Course 2008 circumstances had me off the bike more than previous years - 2009 looks to be shaping up to be much better suited to a happy, healthy riding habit. Perhaps a year from now I'll feel differently.
T.
PS: just realized this thread is about cyclecross bikes.... sorry to stray off topic