If you just like messing around and doing tricks, get a bmx, but otherwise they are pretty much useless. If you actually like bike riding, get a mountain bike.
Don't get hung up on brand. There are tons of brands out there and they all make good bikes and bad, and many of them won't be available to you. Go to an independent bike shop and ask some questions. Not some makes and models that fit your budget and then come back online and see what people have to say about them.