I partially posted about the Charmicheal thone. To be brief, I had a spinal fusion in November L4/L5 L5-S1. Anyway, I suffered nerve damage,and I'm still in extreme pain. I also lost the feeling in my R foot (worst pt when it comes to playing) Anyway, I've heard, and read great things about the company. I used it the first day for about 20 mind, and felt okay (that's a very short practice) I decided to kick it up to an hour the next day. Not so great, actually just as bad as the pain from when I use my Roc n Soc. I took a few days off, and tried again. No luck. To get to my point, about 3 weeks in, I gave the owner a call to let him know no throne in the world is going to help me. He told me to send it back, and he'd refund my $. Well, he was good for his word. I do think it's a great design, and would help just about anyone with back problems. I'll continue to rehab, and pray for the best. If one day I can start playing like I used to (1-5 hours a day) I will definitely get the Charmicheal again. I did sit on the Attack throne that's designed similarly, but the gap is too small. I could see after a few months of use, it wouldn't be much better than any other throne. Just thought I'd leave a good review for a good company, with a very nice product.