Yes, it's Mike Heppner, formerly of Hep's Discus Center. If you do some searches here and on Google you will find various reviews. They were out of the game for a while but they seem to be back now with more than just discus.
I had direct experience with them several (and I do mean several... like, 10+) years ago. They were selling some heckel crosses and a Simply member who lived near them was kind enough to drive up to their facility and hand pick six of them for me. They were separated into their own tank and Hep shipped them to me. When they got here, the bags had leaked so bad that I had to stop at an LFS near the FedEx hub and pay them to let me re-bag the fish myself just to get them home alive. Once they were in the tank they ended up being decent fish, but one had a deformed/dented chin and the Simply member who hand-picked them for me swore that that particular fish was not one of the six he hand-picked. Hep said it was a mix-up, but I don't see how two fish got switched around accidentally once mine were set aside in a separate tank...
The fish were okay but there are sponsors selling very similar (or the exact same, in some instances) strains for about the same price and plenty of happy customers to back them up. Just my 0.02.