I would rate the track as really fun, some fast bits but pretty technical. I have instructed for the BMW club at Hastings before. I would rate George as one of the best hosts anywhere, and don't forget the rides in the Bacardi Bus.
Only complaints I have heard, were from the CO motorcycle guys who were saying the track was becoming bumpy. I believe the milled sections were attempts to mitigate the bumps, and while they can be tricky, grip-wise in the wet, the bumps were certainly never an issue in a saloon car.
Watching the first cars go on track, while warm and toasty in the clubhouse, with F1 racing on TV is hard to beat. The garage condo's are a really good idea. I'd recommend a trip to MPH to anyone.