After a quick UK site shopping trip, I'd go with this 2011 Kona Blast for £430.30:
Tora fork=better than Dart & Suntour, other components around same level as Spec and DB, except better RD with the Deore
http://www.chainreactioncycles.com/M...?ModelID=74272
I don't know much about Corratec as they're not really around here in the states, but this might be the ticket. Dart 3, and lots of SLX luvin for £444.67:
http://www.chainreactioncycles.com/M...?ModelID=69537