Got Aaron Lennon for Liverpool and at best he's been distinctly average. My game is over six seasons in and his stats have hardly improved at all.
Srna is probably the best bet all round. Arshavin was pretty handy on my Man City game (I feel dirty admitting to having a Man City game...), he always gets good ratings, great at beating men, putting in good passes and a pretty good crosser.
Bought Thiago Silva, Brazilian right winger for my Liverpool game, only had him for just over half a season but he's been blazing for me.