I'm not close to being impressed with ESPN Football. A lot of people like it, but I don't. It might be because I'm used to Madden, and might just need to get used to it.
I'd say it's like switching from PC to Mac: one has it's advantages over the other, but it's arguable which is better. And if/when you switch, you'd have to give yourself time to get acclimated to it.
I'd recommend Madden, but I play on XBOX. Maybe you should rent both and find out for yourself.