I've been on a winning streak ever since I put Hornaceck as my coach. Looking at that table from reddit that was posted earlier in the thread, I noticed the triangle system had the fewest downsides. Its upsides were not as significant, but my players haven't been completely boofing it on the boards like they were when I had a perimeter coach in. They do everything pretty well. That's all I want lol, so I'm sticking with Hornaceck for now.
I don't think there are any differences between various coaches of the same system, other than the max number of strategy cards. And you can't use strategy cards in Supermax anyway, so who cares?