Halfords are doing 20% off all carreras this weekend. That would make their Carrera Fury £429. With SRAM X5 groupset and a variant of the air sprung Radion fork.
Just a thought.
I would recommend the Fury, but only if the OP fits a 20" ..... they're nearly all sold out now. After all we've said about the Suntour fork, that Epicon Air reviews quite well.
I've sat on a Fury and loved the way it felt, long slack head angle, and short seat stays...it'll manual like a good'un.
Edited to add
And now they've launched the 2011 range, the bike has a Raidon Fork, .... and plenty of sizes . Sorry, yeah, great bike. Great Spec, amazing deal.