hi all.. i'm a mountain biker just getting an interest in track biking and i'm looking to get/build a bike. i've ridden my friend's chrome bianchi pista and i love it.. and its pretty cheap too. so my question is this... do you think it's a good entry bike? would it be wiser to buy the full stock bike or just the frame and build it up? i want to try and spend less than $600. by the way.. does anyone know where i can JUST the frame?