I don't know if anybody makes a 1/2 ton w/ both crew cab and long bed.
I have an F250, so I'm biased. I like the attention that Ford put into the design and materials and from what I've seen, the F150s are more or less a small version of a Super Duty as far as the interior design is concerned.
I haven't driven a Tundra, so I can't speak to it personally, but I guy I work with has one and loves it.
Dodge, the last time I rode in one (a couple of years ago when my parents were looking at one, so it may have changed), I wasn't impressed just because of the quality of the materials in the interior and the layout. And that was the deluxe model.
Chevy - We have Chevy full-size trucks at work and I have the same complaint about them as I do about the Dodges - poor layout and not thrilled about the materials.
Chevy and Dodge both seem to be decent trucks and drive well enough, but it's the little details that make for easier driving and more comfort that make the difference with the Ford for me.
As Colorado Cowboy pointed out, another thing you need to look at is the wheel-base. I can take my truck out on some pretty nasty dirt roads and off-road as long as there is plenty of room. I can't get it on Jeep trails or roads on the side of hills with hair-pin turns, I've got a short bed and it's still just too long and too big.
So, if you want to do trails, you'll need to consider that.