I'd go with the Kona - I've got the Kona Dew Plus (2009) which is speced higher than the basic Dew but very similar otherwise. By the way, it's aluminum and not steel. Very fun to ride.

If you've tried one out and know the size you want, look out for remaining 2009 models (the Dew Plus 2009 is black) as they could be a lot cheaper - though you may need to buy online and have it shipped. Also, check out the Kona Smoke - a steel framed Dew but with big tyres - and a few quid cheaper.