I've been sceptical of all this Benzema hype, but today I was frankly surprised. He was constantly terrorising our defense during the first half and was unlucky (and lucky for us) not to score. That said, I don't think he's worth the price tag Aulas will put on him. If Eto'o goes, yes, we might use him, but I'd rather get Villa who is older and more experienced, particularly in Liga. The point of mentioning his age, which would normally play against his favour, is, as has been mentioned earlier, Bojan. I think Villa would be almost guaranteed to be a success, especially given his already established National team connections with the Xavi-Iniesta midfield. He could probably give 2 or 3 seasons of his highest quality services, by which time Bojan would take over as first choice striker.
About Aguero, I am a big fan of Kun, but I doubt he would fit in. His style is too similar, and in a way negating, to Messi's, as has been seen in the Albiceleste. From what I can see, he works best with a striking partner, at the moment fellow ex-Independiente Forlán. Yes, he could form a partnership with Bojan, but not only would that make us the shortest team around, but also would have to readjust everything about the formation. So no to Kun.