Who are the best players to buy on football manager 2009

Sergio Aguero is amazing, Karim Benzema, Fernando Gago, Miralem Sulejmani, Gokhan Inler, Lassana Diarra, Yury Zhirkov, Darijo Srna
you would have to pay a lot of money for sulejmani and he probably isn't worth it
You would have to pay ove £40million for Aguero but he is always worth it
If you want a cheap but good defender i would recommend Martin Caceres