I'm in 3 leagues but most my attention goes into the one I've been in since '05.
It is auction based (which is hands down better than draft imo). 12 teams, 3 divisions. Keep 2 players a max of 3 years with 20% increase in salary year 2 and $10 (fanasy $) in year 3. The 2 players must be a different position. TE score .5 pt per reception. We've also added in pt benefit for big yardage games like 400+ passing etc...
I've been in several leagues and this is the best. Probably what is most important is having owners that care and don't give up after week 4.
I was lucky enough to start Jerome Harrison this week and had 180pts