Di Resta, all day long.
Very impressed with him so far, he's very grounded but tenacious.Early days obviously, but he seems composed and level headed,I expect he'll be in a bigger/faster team sooner rather than later.
Possible future WDC ?
Definitely. He reminds me of when Vettel came into the sport, a few mistakes here and there, but a real talent, you could see it from day 1.