Because no one has directly answered your question I will throw in my two cents worth:
For several years I served as a "standardized patient" - first as a (retired) volunteer, then eventually paid for my time/ service. I did it to be helpful, not make a $.
Anyways, many schools, colleges (and hospitals) have now switched to using memory foam mattresses - and while laying there I came to appreciate their comfort.
When it came time to replace our primary coil mattress (4 years ago) I looked to Consumer Reports - and they recommend several memory foam mattresses.
At that time they gave the nod to the Casper brand - and as it was about 1/4 - 1/3rd the cost of the nearest high rated coil mattress I gave it a shot. We're both still happy with it.
So my thoughts are: memory foam is cheaper, lighter, easier to clean and just as comfy; plus it'll have a compressed/flexible advantage when trying to move it into an RV.
We've not even yet rotated or flipped our Casper mattress, its memory obviously holds its shape better than our former expensive coil mattress.
YMMV.