Wawrinka for me. Been a fan of his since 2007-2008, and have always loved his movement and his game. Yes, Roddick has more overall titles and MS 1000s, but I'd much rather have Stan's career
I've always felt Roddick underachieved in his career. I think if he had stayed with Brad Gilbert as his coach, his game would've continued evolving (would've gotten a better backhand, better movement, and added more variety to his cannon serve)...and not gotten ran over by the Nadal-Fed train from 2005-2010 as much as he did