.

I'm also 5'11" and were it not for me already having a 'best bike' I'd be all over this like a rash. What T said above is a personal preference of my own, and a preference shared by the vast majority of people I ride with - slightly smaller frame and longer stem/post makes for a much better feeling & handling bike.
It's very easy to make a smaller bike slightly bigger and handle better, yet nigh impossible to make a bike that's too big smaller. Forget making it handle better.

Absolute bargain that I've been desperately trying to convince one of my friends to buy, you just don't get an opportunity for a frame like this very often unless you've got £2k+ to spaff.