McLaren - Lewis, because he melted the Iceman at Spa 2008 from when I was lead to believe Kimi wasn't the best on the grid anymore/afterall. Plus, he's a hell of an overtaker and just bloody awesome to watch on track. I'm also probably the only guy on this planet who thinks Button is a 2 face backstabber, which is why I've gone from completely neutral to slightly disliking the guy.
Ferrari - If I ever hated 1 driver with a passion, it was Alonso. But time erodes hate, and I respect his talents as one of the best on the field, and like his calm and collected attitude in Ferrari despite things not going according to plan. Of course, his personality is helped by the media portraying him as a God and his teammate currently making him look like the God among Gods.

Oh, and as for Massa, couldn't give a crap about him if he got fired in the next 5minutes. After last year, I wish the worst for him.
Redbull - Prefer Webber, his personality is quite similar to Hamilton in my view...straight talker and no bullsh*t. He's also quite comic during interviews, I enjoy his presence in F1. Vettel is also quite alright, but he does come across as F1's Justin Bieber which kills it a bit for me.
Mercedes - I prefer Rosberg, though I want Schumacher to do well as well. Rosberg has just been waiting too long for success, and 1 win in 111 starts doesn't justify his talents for me. In a perfect world, he would be in McLaren partnering Lewis and winning races with Lewis.

Lotus - Kimi, my previous favourite until he retired. His comeback was one of the best news I've heard in F1 and I hope he starts winning races before the end of this year again. Grosjean I believe has some serious talent but that's it for now.
Sauber - Kobayashi for sure. But I like Perez as well, though I hope for the Koba to beat Perez this year and it's going to be one tough challenge but I still believe he can do it.
Caterham - I like Heikki's attitude in this team, he's a real asset. Sadly I think he had his opportunities to shine and screwed it up. Reminds me of Fisichella, fantastic when handling a difficult car in midfield, but just can't cut it mentally at the sharp end of the grid.
HRT - Have a soft spot for Karthik, as I thought he was going to be a star when he came into F1 in Jordan many years back. Was outperforming his teammate and always looked at the ragged edge, commentators were going crazy about him whenever he was on a qualifying lap. And then for some reason, he faded out and left F1 and became someone forgotten.
The rest, don't really care.