I think McConnell only manages one course -- the Members Club at Grande Dunes in Myrtle Beach. I'm pretty sure they own every other course in the portfolio, which probably makes a difference.
With that said, I've played Sedgefield, Old North State, Treyburn, The Reserve, Musgrove Mill, and the Members Club. They are all in excellent condition (with the exception of the Dye Course at Sedgefield -- but it has serious drainage problems and has for a long time). I've played the Members Club several times and it's always been in good shape with excellent service, so I'd say they've done a good job with the one course they manage.