I just got a Trek 7.5 FX Disc for wet weather commuting. Here's my
initial impressions. I don't have many miles on it because the weather has been dry. Go out and ride them all. Bikes in the same price range generally have similar component levels. You might be able to get a better model if you can find a discounted 2010 or 2011. I'm guessing that if you ride 5 or 6 bikes, you'll find you like one or two and that will help narrow down your selection.
Also, what do you mean by "light trail"? Fire roads? Or real MTB paths? I only ride on the road, so I wanted rigid frame. You might prefer a bike that has a lockable fork.