What's a good dirt/jump bike for under £300?

[Dude]

I'd want it to stand up to some stick, last for long and look the part aswell.

I was looking at a 2009 Mongoose Fireball: http://www.evanscycles.com/products/mongoose/fireball-26-2009-jump-bike-ec017384?utm_source=froogle&utm_medium=froogle&utm_campaign=froogle

I could stretch up to about £350 but the cheaper the better.

Also i'd like to know what you think about the Mongoose.

Cheers