I own the BD Liberty 1 and it is a fine bike. Those who say it is a 'spongy' frame must be more sensitive than I. The geometry is nice and aside from the crank, the frame and components are worth the money. Careful of size though - I am 6'1"/33"-ish inseam and I sized down to 53.5cm frame.

EDIT: I converted this bike to a flat bar road bike this weekend for my son at college, and it is a blast to ride, even with flat bars.