After tons of research (both online and testing various mattress/base combinations in a brick and mortar store), we bought a "DynastyMattress Split King 12-Inch CoolBreeze GEL Memory Foam Mattress with S-Cape Adjustable Beds Set Sleep System Leggett & Platt Made in USA!" on Amazon about 3 months ago. This model was/is comparable to a Tempurpedic Rhapsody Coolbreeze on the same frame and cost about 75% less. It's a fabulous bed and we are very happy we purchased it. Feel free to PM me if you want any additional information.

Best mattress we ever had and have now is the Casper mattress. I have them on every bed in the house. When my kids moved out they took their mattress before anything else. LOL

Where ever you buy the mattress make sure the store has a exchange policy. You might think you want a hard/soft mattress then find it not the right one for you. I got a firm surface and found it was too hard. Returned it for $100.00 and got a medium one.

I had the topper for a while and did not like it because it doesn't breathe and made me too hot. And that really takes a lot. I am the coldestperson alive, so you are getting a lot of opposing reviews. Good luck with your decision

We have a Serta I-comfort which is Serta's memory foam mattress, I have the one with the cool gel layer.

I love it ... my husband not so much. We both agree it's tremendously comfortable, but he thinks it's too hot. It should be noted however that my husband thinks a regular spring mattress is too hot. I agree that my husband is indeed too hot in bed (and no, that was NOT a rude comment, I'm talking pure fahrenheit here!).

We have had our Temperpedic for about 3 years and I never had a better nights sleep than with this mattress. We also got the split king set up--like two twin beds set next to each other. I do get a little warm, so usually just use a top sheet. Bought two sets of split king sheet sets at overstock.com that are great. Or you can just buy 2 long/deep fitted sheets. 1 king flat and the pillow cases separately.

We also have the same one and we are both happy with it. My only regret is maybe buying the one a little firmer than we did, but otherwise it's great. My DH also runs hot, but doesn't have a problem with it.

We bought a Tempurpedic years ago when it first came out and my DH and even I (who runs cooler) were too hot and we lived in the SF Bay Area at the time. We ended up buying a new mattress less than a year after buying the Tempurpedic.

You might look into http://www.intellibed.com/ They are also a bit pricey, but its by far the best bed I've ever owned. We have a king in the bedroom and purchased a topper only for the RV. Couldn't live without it.

We just bought a new mattress and we bought from Verlo (they are all over and build their mattress) The reason we went with them as they will take back your mattress and rebuild (for free) as long as you own it. It also is the one with a base that is completely adjustable and they put a top on it that isn't hot. A new breathable fabric that stretches and not hot. Am anxious to get it. Comes Thur.

DH has back problems and we've owned every mattress made. Luckily we learned to ask about return policies because it takes a few nights to determine if it'll work. Can't be shy. Spent more on mattresses than we did for many of our cars. We do have the cooling gel topper on our guest bed. Turned it over for the winter for the warmth. I also have a topper to put on my pull out couch.mone topper we bought did puff up and Sams exchanged it for us. Also when the mattress wears out, have them come check it out. We got a huge refund due to the guarantee that it would last so many years but wore out early.