We got one and i have to say it is a really comfy mattress. We couldnt really get a sense of mattresses in shops so decided to go with the trial on this one.
We both sleep alot better since getting it. It was also the best option for us size wise/delivery method because our stairs have a weird angle at the top so getting a superking mattress up the stairs in its normal form was not really an option.
It comes rolled up in a long box and is really weird at first but a few hours to set and you're good to go.
I emailed big mickey yesterday morning after finding out he has a very good reputation and got a reply 3 minutes later. He has given me a recommendation on what should suit us and am just waiting for a price off him today before hopefully sealing the deal.