The major BMX brands, like Mongoose, Eastern, and Cult Crew, make bikes that are more or less identical in terms of what they can do, so choosing a model comes down largely to what you want the bike the look like. Keep in mind, you need a BMX bike to be extremely lightweight, so try lifting a prospective bike by the handlebar before buying it. If it's hard for you to raise the handlebar up, it's too heavy for you.