I'll start w/ a battle:
Ryan Braun vs. David Wright
I think Braun is more of a threat to Zimmerman to make the All Star team than Wright is. His .324 BA, 34 HR, and 97 RBI in only 113 games says it all. Had he played more of the first half of last season, I'd think he would have actually been pretty close to getting the AS nod over Wright, regardless of Wright's popularity and the fact that he plays in NY.
An argument for Wright would be that he has a better glove (maybe) and that he stole 35 bases last season. He also had a BA of .325, while playing more games.
This is actually a tough one b/c you have to figure what they have around them as well. I'd say, going into '08, that I'd rather have Braun on my team (real OR fantasy) than Wright. I'm not really thinking the kid will have a sophomore slump like a lot seem to do. This isn't just my anti-other NL East teams side talking either.