Hi EddieC,
[quote]In general, is a no flip one sided mattress preferred over a two sided flippable for any reason?
A simple explanation was given that they would be the same spring assembly with the difference being of twice the thickness of comfort layer foam on the top in the no flip model compared to the flippable two sided mattress. So it’s either all on top of half on each of the top and bottom.[/quote]
You can read more about the pros and cons of a two sided mattress in post #3 here and the posts it links to.
You’re right that rotating a one sided mattress isn’t as effective as flipping a two sided mattress in terms of evening out wear and softening but it still can make “some difference” and it’s a good idea to follow a regular maintenance schedule with any mattress (see post #2 here).
Phoenix