the GLV in tark was the best conference in all of D2, for the 10 year period, in the period 30-40 seasons ago. recently i checked, they dropped to #3 in the 5yr, but were still #1 in the 10 year. this is just some hash, a combination of the single school dynasty rankings i did a while back, combined with a little logic for a conference score - which slightly reduces the value of the best teams in the conference. i put that in place back when i had 5 titles in 7 years, 7 straight final 4s, because i felt a conference who had those 5 titles split over maybe 3 teams would make the conference as a whole more difficult.
so, while the ACC in allen obviously is ahead of us right now in difficulty - and actually, those two other d2 conferences have been harder the last couple seasons - i think the GLV in tark takes the cake for length and magnitude of greatness. mrpolo might disagree, upstate in wooden i think it is, has been one of the games elite d3 conferences for basically ever. but for at least like 20 seasons there, they were consistently only like 3rd in the game, where the GLV was always first, by a lot, so i tend to give us the edge (can't claim to be unbiased, however!)