The movie is alright if you enjoy the genre, but there are better.
The acting is passable, but a little stiff, and the characters were a bit too formulaic for my tastes (the silent, tough type with a mysterious past, the grieving husband/father full of bitterness and anger, the token black guy, and the selfish, shallow woman who gets hers in the end).
The action is not the most plausible, with the characters often doing things that no one in their right mind would do in similar situations (i.e. wasting ammo, not shooting at opportune moments, or walking along the open road, loudly yacking away in a countryside known to be crawling with cannibals who are skilled at tracking). The plot has several other holes as well, the biggest of which is the cannibal clan's survival strategy: sacrificing 30 or so of their group to capture maybe 3 or 4 people for food. Even if they consume their own dead, they have enough fodder to pull that kind of operation maybe once or twice before the jig is up. And that doesn't even account for the fact that a small, divided band of untrained klutzes can dispatch nearly their entire force after getting trapped in a location specifically designed by the cannibals themselves. Seriously, was this the cannibal clan's first rodeo? If so, they won't survive such a steep learning curve.
In all, though, it's a great movie for people who don't want to do a lot of thinking and are content with just passable entertainment. I don't regret having watched it, but I won't watch it again either. Rent this on a slow night, but don't add it to your collection. (And also don't pay more than $2.99 to see it).