I am thinking about getting a second bike for communting and wonder what you guys think?

I have seen the MT03 in action and must admit I do like them alot, but how is the economy side of it compared to others?

I am a stealth 5'4" (shortarse to you lot) and my little legs restrict me using something like an XT

So do you have any suggestions?

Oh and a budget.. well I am prepared to buy second hand or new but dont want to pay more than £4000 tops for one.