Hmm, I switched to WE8LE since PES4 is just too simple, even at 6*
With PES4 at 6* I think the best one is (could have had a higher one but this one's memorable because I detest Ajax)
ML: Feyenoord - Ajax 11-1 (Must say that I always go wild against Ajax since Feyenoord and Ajax are archenemies, and I'm a Feyenoord-Hooligan

)
Anyway WE8LE is so different from PES4 :| I'm now playing with Juventus at 3* and still only winning 2-1 or 1-0 or sometimes even lose (second season, still in 2nd Division (First year played at 5* but ended up 5th that seaon) Actually what is more frustrating is that not a single good player wants to play for my team anymore. Juventus is starting to look like a second-class club. Sold about 5-6 players because I needed the money (would have been broke at the end of the 1st season) Then I tried getting some players but the only ones I've been able to contract are the youngsters Emilio Nsue and Vanden Borre. I need to get out of the 2nd Division AAAAAAH!!!
Tip: Play WE8LE or WE9 instead of PES4...
warning: You will get frustrated a lot when losing against a counterattacking team... :'(