Since 2000 (20 tournaments):
Big Ten has sent a representative to 13 different Final Fours, most of any conference in the country followed by
ACC: 12
Big East: 11
SEC: 9
Big 12: 9
Big Ten has had multiple members in the same final four 4 different times, only the ACC has more. Only the ACC has more dominant teams than Big Ten. Kansas and Kentucky don't define a conference. The old Big East was the best conference until it disbanded, since then it has been the ACC and the B10 who consistently send teams the furthest. It's not even an argument.