I'll say that I have done a league @ BG some time ago and it was a lot was fun. It requires more commitment then a 1 day 1 shot tourney, but there is more flexibilty with dates and length of gametime. There is generally a generic league day (Thurs for example), but if you can't make that day then you and your opponent can agree to play a different day, as long as its in the same week. Also its only 1 game for a given day, as opposed to a tourney where you are playing 3 games over the course of 7 hours all in 1 day.. the dynamic is very different.