Exped - Ultra 1R

My exped is a piece of magic.

My exped is really comfortable and warm

I've used it for about 80 days over several trips. It's a very robust build.

Same. OP, given that you have the space, I would recommend memory foam or something similar. I use a 6” trifold mattress, but in your case, given that you have the space and have trouble sleeping, I would recommend a normal one-piece mattress for you. If you do use the Exped, the secret is to adjust the air pressure. Everyone is different, but for me, if I let out air until my butt just barely touched the floor while sitting on it, that would be ideally comfortable (though not as comfortable as memory foam) when I laid down on it.

Exped Ultra is comfortable and ultralight. Pretty affordable, too. Give it a try. 

I had a Tensor and it was uncomfortable for me as well. I’ve found Exped inflatable pads comfortable. My favorite right now though is the Neoloft.

Exped pads are highly underrated!

After various attempts of finding the right set up: Exped on top of a cot. Watch for REI sales for the Exped, and watch the garage sale area for the cot.

Any Exped Med-Wide pads fit the bill. Incredibly comfy to boot. They are more expensive but a good nights sleep it worth it imo. Best investment I made for camping. I got my Deep Sleep for just over $100 on sale.

Ahh ok then yea low or no R-value would be fine in those cases. Klymit also makes a good lightweight low R-value pad, it's what I used in Texas and worked quite well in warmer weather. Not as heavy or thick as the one you linked, but much lighter and packs down smaller. Great if you're backpacking but there are better options if car camping imo. Exped Ultra 1R is also a good pad, the more insulated 3 and 5 are also popular for colder temps. I've used the Dura versions which are a heavier/more insulated version and it was comfortable. I've also heard good things about Nemo Tensor but have no experience with it.

A sleeping pad is not the spot you sacrifice for the minuscule weight savings possible. I use an Exped mat that is like 4” thick, extra wide, XL, and insulated and I’m not even sure it’s heavier than the 1” Thermarest I used for 20 yrs prior.

I (64M) swear by my Exped. Not cheap but comfort in a relatively small package. It comes in a bag that can be attached to anything. YMMV

I (64M) always used a cot when camping. REI had Expeds on sale and I have read such good things about them, so I bought one. They are the best mattress for camping I have ever used. Even weighing 230lbs, side sleeper, I would have a tough time touching the ground through the mattress. They are quick to fill up with the enclosed hand pump and quick to deflate. They are light and I now prefer it over the cot that I have used for many years.