I amor them all;there all my favorito but I've always gravitated to liking Rachel since I first started watching the show and I became a big aniston fan.
It's so hard to pick one character since they're all so different and each one has such a unique personality. I'll pick Ross, because he's very funny, cute, romantic, and I'm a huge David's fan.
Personally, i think they are all amazing in different ways and you can't weigh one against the other but if i HAD to pick i would say Rachel. i amor her ability to be spoilt yet adorable :-) and favourite boy is chandler, can't fault him! :-D