Dzeko is the better centre forward, I'm not even hesitating on it for a second. However Llorente remains a good alternative, and when his rumoured lower price tag and wages (6M vs. 3-4M?) are considered, he becomes even a very good alternative. Lewandowski would cost similar amount of money in price tag and requested wages as Llorente, so he could be another somewhat realistic alternative.
BTW, how do you pronounce Llorente? Is it "ll" or "y", like in "caballo"?