I haven't bought Fifa 09 nor PES yet. I don't know which one to get. Champions league play sounds awesome the only thing that puts me off is the lack of licensing of the teams (the last Pro Evo I played had the players names as 'Oranges') It may be different now.
Fifa 09 sounds good because you can customize the controls, although you can't create a completely new team on the PS3.
I may get both I'm not sure