Took mine down to Kirroughtree on sunday for some red action. No huge difference to the mk1 (I'm glad to say), the only difference for me is that it seemed to be nimbler, more direct. Purely subjective though, just my opinion.
One thing I really like is the underslung cables on the top tube. Looks great, and I don't need to think about securing the brake hose in the middle any more.
The gussets up front make it look more robust, the whole frame is lovely. Loving it already.
Anybody looking for a mk1 with a cracked rear chainstay? ;-)