I would watch it again. My wife she didn't think one part was believable, so she was indifferent.
It's one of those bleak, slingblade type settings, which could be too dreary for some viewers. I on the otherhand, love those type of backdrop drama/suspense movies. It's dark, but has some bright spots between the brothers, and love interests.
The darkness tends affect the pace at times, which is a slight downer. It could have been a little more suspense.
The direction was great. Writing was great. The leads did their parts. I guess one part could have been a tad more believable, but all in all it didn't bother me.
Pleasant movie, with a mostly black cast which is pretty awesome. I highly recommend.