Had a good chat to the Irish chap in SweatShop (Brighton) and he's road-testing the Triax 16 due for imminent release; so that seems the obvious choice. But others for consideration are: Brooks Adrenaline 12, Adidas Sequence, Nike Eclipse and Asics 2170. I'm tempted to go off-piste and try the Brooks.
<EDIT>Tried the Brooks GTS 12 and Nike Triax 15+ and went for the Asics 2170 (top image).
