How heavy are you and your sleeping mate? That is going to make a huge difference, unless comfort isn't what you're after.... If you're a fat dude, you gotta take that into consideration. If you're a little skinny dude, you gotta take that into consideration.
And anything you buy at Camping world like this is going to be more expensive. Consider calling Lax (that's his name) at Texas Mattress Makers - you can have a quality foam mattress made for you for less.
as to the camping world mattress, find out what the layers are made of and the densities. Once you find out what the layers are made of, bounce it off of Phoenix (that's his real name) at The Mattress Underground (just google that, you'll find it easy) - Your best source for information on mattress brands, materials, and choices - that guy knows more about bed construction than all of us combined!
And he answers questions lightening fast! Just go to his forum.
Personally, I have a foam mattress in my bus, and I can't wait to pull it out and put in a dual layer pocketed micro coil.
Foam will always break down over time. And if you get the wrong foam from the get go, it will already be too soft, and it will break down faster.
I don't know how old you are either, so do you have any back issues already? Do you have any arthritis? Anything like that? If so, the foam could make that issue far worse and fast.
I know people think coils are a thing of the past, but that's just the foam market trying to sell you something. Todays coils, especially pocketed coils and pocketed micro-coils are the most supportive thing on the planet - like the kind made by Legget & Platt
Here's something else I know about mattresses. If you buy one that's firm, you can always soften it with a wool, cotton or HD Foam topper (see Organic Mattress and Natural Latex Mattress ) and go to their toppers. But if the bed is too soft to start, you're fubar'd on making it firmer - and NOTHING sucks worse than a soft spot in a foam bed under your hips, talk about killing your back!
RVM#78 - -USAF- F-15 Eagle Radar Vet
2005 Fleetwood Revolution
'12 Chevy 2500HD
'15 Airstream International Signature 27FB