I would like both of them in the 25 man squad, but if it was either or id have to go with Balotelli. A young, strong player for the future, dubbed the next Ronaldo (the proper one) :-p
Bellamy is good, but in the second half of the season i dont think he was very effevtive, the amount of times he got in good positions and couldnt beat the first man with a cross, it got frustrating. Plus bellamy hasnt got long left in football, Balotelli is exactly what we need, hes got the lot, skills, strength, pace, finishing, and he can also head a ball, something none of our other forwards seem to be able to do.