Exped - Ultra 7R

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.

I've got an Exped 5R in a long/wide size. It's listed as 77.6" x 25.6" x 3". I had a 7R a couple of years ago in the same size. It was a 3.5" thick mattress though. Honestly they've been some of the comfiest sleeping pads I've owned. I'm pretty much the same size as you are as well. I'm 6'2" and 215. I've never found the size of the pad to be too short or narrow. And I toss and turn like I'm clothes in a dryer. There's plenty of thickness to keep you from sinking in even if you're a side sleeper. The only downside to the pad is it's packed size. Which is bulkier than the traditional suggested sleeping pads, but it's really not that bad for what you get. Also I just looked at the Megamat. The 5R has a higher r-value, is still 3" vs 4", but that megamat packed size isn't worth the extra space at all in my opinion. I think the bulk of the megamat will cause more problems than it solves in the long run.

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.