Comparing Gila and Imbrahimovic is like comparing apples and oranges. On the current set up I would prefer Zlatan because he is more versatille than Gilardino. As John points out, his ability to hold the ball is amazing, a la V. Nisterlooy, and he got some mad skills. Furthermore, I likes his burst of pace, even if he isnt that fast player. Acceleration is more important for forward IMO. However, this is based on the assumption that Trezeguet and Alex are going to be our long term attackers. I love Alex and I rate David's ability to find net, and I have been very few who defend him. But there is no way he is better than Zila and the latter will surely establish himself as the world's best in few years time. Gila is more invovled in the build up, and simply has better eye for goal. His ability to hit the ball a temp earlier reminds me of Batistuta (But Batti can put a lot *spiece* on the ball as well

). And there are few in the world who is better than Gilardino in the air. At the end of day, I dont like hybrid types likes Zlatan, and prefer prototype players a la Gila. There are simply more effective if they are parterned with good complementary players.
And that is why players like Gila, Tevez will be in demand much more than Zlatan, and they are the players that I truely want.