I was going to put up exactly the same topic!!
I've been looking and want to spend a maximum of £400 on my bike as I'm not totally into it just now, something more expensive is likely to be overkill. I went for a look at a local shop today, took out a Ridgeback, GT and Kona.. and out of the 3, I liked the Kona Fire Mountain the best but its all down to personal preference I suppose.
Cheers,
Grant