Sissko from liverpool works pretty good for me in DM (scores quite a few and is value goes up & up)
others which i have have used which are good/world class
IMO
De Jong (got a tip from the good player guide on the forum - well worth buying)
Lolrente (spelling - he is 20 and plays for A.Madrid i think (ST) world class)
Lucrulli - again got a tip of the forum - despite his age hes amazing - like other people have said
Maxwell - LWB - i think plays for Ajax
Fabragas works relly good in AM for me scores loads.
Evra LB at man utd - this guy for me is amazing - i played him in a 5-3-2 as a LWB and he got man of the match in nearly all my games.
C.Jerome St Cardiff - i know he might not be world class, but for me at dortmund he scored 45goals in his first season, i was manager of England too, gave him 5 caps & he scored 8 goals - he only cost me 2.5mil aswell.
Walcott arsenal - best young player i have come across
IMO, im in the year 2007 + manager of england and walcott is keeping beckham, SWP & lennon out of the team.
But like other people have said - check the good player guide - as myself has found loads of good tips & players off there