I decided on and ordered my shoes today, the Brooks PureGrit. Made with input from none other than the great Scott Jurek!
I evaluated a few different pairs, but PureGrit took the biscuit. There's a lot about them that I like. They're the new kids on the block - part of Brooks' new 'Pure' range which came out last month.
For one they're incredibly light at only 250g.
They're also one of the few 'minimalist' shoes that I can fit my orthotics in (I have seriously flat feet and overpronate - since I got the orthotics, I've had no more knee problems).
Finally, they look like something the hulk would wear! There's a full review from the guys at 'iRunFar' here.