this is my first season on yahoo. They do indeed suck. I am in two other leagues where the scoring is much more rational, and consistent. Playfantasy is one, and it is new, so there are occasional point disputes, but the administrator posts on the bulletin board, so any question you have will be answered by the guy who is running the site!
Also, bestfantasysports is pretty good, the only problem is getting people to respond to trade offers because it doesn't notify them unless they happen to go the trade desk. Other than that, those two are sharp. Anything is better than Ya-Boo though.