Which Smackdown vs Raw game had the best gm mode?

[Tommy]

I remember i had svr 06 and 07 on the ps2, i loved the games but i never got into the gm mode. Then my friend gave me 06 on the psp and the gm mode was great. One thing I loved about it was being able to continue after the year ended. But my dogs chewed up my game. I was going to get it again but i realized 07 and 08 had the gm mode too. So can someone who has played these games tell me which has the best gm mode. Thanks