dk, free agent, 2 hip, we the people, stolen, fit, eastern, gt, se, for like everything but racing, if you get a bike, you should get one that's full chromoly, instead of just the top tube or something, because chromoly is a better material than high tensile steel for bikes. if you want a race bike, se, dk, free agent, supercross, ghp, intense, mcs.
three piece cranks are better than one piece. and if you plan on doing alot of harsh riding, then i recommend triple wall rims, which are much stronger than double walled rims.
haro is a mediocre bike, even though they are quite popular, but there are much better brands out there, like the ones listed above.