In reply to pban:
I'm in the market for the same, came down to Arcteryx Alpha SL and Mountain Equipment Firefox, partly as they were the ones I could find to try on and are easier to get hold of (there were others in the list, the Arcteryx Alpha FL, but can't justify another £100 on top of the other two!). Getting the ME Firefox, even though the Arcteryx is a better cut, partly due to the pockets n the ME one, partly due to the fabric (not had great experiences with Paclite in the past).
I also looked at the Rab Alpine Latok and Montane Alpine Pro.
What's it for though? Climbing, mountaineering, walking, summer/winter...?