I'm partial to Turner frames.  Check out the 5 Spot for an all around trail bike, the 6 Pack if you want more travel for aggressive riding, or the Flux for a lightweight trail bike that can hold its own on the race course.\n\nTurners are known for a great balanced ride feel, stiff/solid construction, and great customer service.\n\nNote: Turner recently changed the design of the suspension linkage on all their bikes.  Reviews indicate no significant change to how the bikes ride, but if this is the sort of thing you care about, read through the reviews at mtbr.com.
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