I've used every icon, except Ronaldo, Blanc, Inzaghi, and a couple of others.
Here's my favourites:
Prime Roberto Carlos
90 Del Piero
The only stinker I've used is Prime Bergkamp, who's SBC i completed. I ended up putting him into the Maradona SBC.
Kluivert is just as good as 95 Pele, but for a fraction of the Price.
Prime Nesta has been solid for me. I've used him in almost 2000 matches now.
My current team: