This would be my list....be interested to see yours .
Yobo, Arteta, Cahill, Lescott, Stubbs, Neville, Yakubu, Baines, Jagielka, Pienaar, Howard, Fellaini, Saha, Heitinga.
Wright (but Wenger made the same mistake), Kroldrup (got most of the money back), Davies (again recouped money), McFadden (made good profit though), Beattie (debatable, top scorer one year and again got most of the money back), Johnson (again debatable, didn't live up to hopes but we sold him on for a profit), VDM (fair cop).
Jury still out on some (Billy, Distin).
Those are his most significant signings I think (probably missed some)....record stands up against anyone for me.
Posted elsewhere but bears repeating...from The Guardian after the United game...
"This has been a transformation as comprehensive as Arsène Wenger's refashioning of the lingering George Graham era: eight years ago in Moyes's first game in charge he picked a midfield of Tony Hibbert, Lee Carsley, Scot Gemmill and Thomas Gravesen. On Saturday his midfield was made up entirely of neat, skilful ball-players, three of whom were 5ft 7in or under. Diniyar Bilyaletdinov, Steven Pienaar, Leon Osman and Mikel Arteta more than matched the visitors for invention. Add the injured Marouane Fellaini and Tim Cahill and Everton have arguably the best midfield in the country (perhaps behind only Chelsea)."