I few months ago my wife and I purchased a Select Comfort bed. The one where you can select your 'sleep number'. Our previous mattress and box spring were over 10 years old and it was getting time to replace them.
Ordinarily, this would not be a big deal except for the fact that I have grown accustomed to new mattress and am truly sleeping better. This was all well and good until I tried to sleep the last two nights in the fifth wheel. Each morning I have awoken to stiff necks and sore backs. It is not like the mattress in the trailer is bad. It is about two years old but has only been slept on about 75 nights. That's barely over two months.
I am going to optimistically chalk it up to just a couple of bad nights of sleep and see if I have the same problem the next time we take the trailer out. If it happens again, we may have to buy another Select Comfort bed for the trailer.
Now, if you don't mind, I have just set my side of the bed to '50'. It's time to go to sleep.