We used Southern Lifestyles to buy a mattress (over the phone from Canada). They delivered it for free the day before we arrived. After 26 hours of driving, we were exhausted. Seeing the king-size mattress in place and waiting for us when we arrived at 9 PM in TV was pure bliss.
Southern Lifestyles even offer a 30 day "comfort trial". If not happy with the mattress after using it for 30 days, the purchasers can return it for another one.
Oh, and get this .... for free, they will send some big, burly guys to turn the mattress for you every three months.
I think SL is a great, well-run store!