Honestly all the coaches outside of Jerry Stackhouse and Tom Crean are good to great coaches. Right now Nate Oats and Eric Musselman have it rolling. Rick Barnes, John Calipari, and Bruce Pearl are all great recruiters and have had tournament success. Mike White has taken Florida to the tournament consistently and made an Elite 8 run not that long ago. Will Wade is a cheater but LSU always finds ways to win. Frank Martin is a good coach. Kermit Davis is good. Cuonzo is a good coach and always has a tough-minded team. Buzz Williams was good at Marquette and Virginia Tech but he hasn’t found that type of success at A&M for whatever reason. Doesn’t mean he’s not a good coach because it’s not working out at one place. Ben Howland isn’t that good imo but his teams always play tough. Nobody is going to be considered the best coach in the country but from top to everyone outside of Crean and Stackhouse, it’s hard to beat the quality of the collective group of coaches in the SEC.
I think you overrate the SEC coaches. This current crop of SEC coaches isn't bad by any stretch, but I don't think they are as good as you make it out to be.
- Oats and Musselman have it rolling currently but you're talking about limited sample size.
- Barnes has been a good coach throughout his career but is an underachiever who rarely brings it in March.
- Cal is a great coach.
- Pearl is a good/great coach but has baggage. Don't get too carried away with Pearl; he was great at Tennessee but left under a cloud. At Auburn, yes, he had the Final Four run, but he's missed the tournament 4 times in 6 years (self-imposed this year and they wouldn't have made it anyway).
- Wade has gigantic baggage and just one Sweet Sixteen appearance, but his teams are always competitive.
- Frank Martin has had zero success at South Carolina outside of a flash-in-the-pan Final Four appearance 5 years ago (he hasn't made a single NCAAT at USCjr outside of that run). He's nearly 20 games below .500 in SEC play over 9 years there.
- The jury is still out on Kermit; he's a .500 coach through 3 seasons.
- Cuonzo Martin is not a good basketball coach. He has not won a single tournament game at Mizzou, and the last tournament game he won was 7 years ago when he was still at UT. Well below .500 in SEC play during his Mizzou tenure.
- Buzz Williams has absolutely stunk thus far at A&M, but limited sample.
- Ben Howland has stunk at Miss St.
- Mike White might be the single biggest underachiever in all of college basketball; there is no way Florida should have only one Sweet Sixteen appearance in 5 tournaments.
Of the coaches that have a large enough sample size at their current schools, the SEC would probably throw Cal, Pearl, and Barnes at you as their top 3. The Big Ten would counter with Izzo, Painter and any one of Gard/Underwood/Holtmann. Their top 3 is marginally better, and their depth is definitely better.