
Exped
MegaMat Series
Car camping comfort king; warm and durable.

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I've used sleeping pads from Exped, Sea to Summit, Thermarest, Klymit, and a bunch of random off brands like outdoorsman lab and ampex. In my experience all brands will hold air all night and are roughly equally reliable out of the box, the difference is the higher end brands have better support if you get a defective product. That being said, Exped makes my personal favorite inflatable sleeping pads and if you mostly camp in warm weather you can currently get their 1R from their website for $50 https://www.expedusa.com/products/ultra-1r-mummy If you go out in colder weather, add a 1/8" EVA foam pad like this one: https://www.gossamergear.com/products/thinlight-foam-pad Combine those and you get a sleeping pad that can get you down to just about freezing (in my experience) for a total weight of ~1lb and a cost of ~$80
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.
Exped Dura is solid as a rock and makes some very warm options at 5R and 8R. It is a bit heavier but also a much thicker denier of fabric. The Ultra series is a lighter version with thinner, more standard denier of material.
Exped is good, several models depending on what kind of camping. For reference I’m 6’ 330lbs. MegaMat/DeepSleep used for car camping. Dura used for backpacking. You may also be able to use furniture foam which would be cheaper and can be cut to different sizes.
I can’t use anything over a 2 in summer or I sweat profusely on whatever side is against the mat. Sold my uberlite and picked up the 1R long/wide. Sleeps more comfortable as well.
I actively dislike my summer pad (Exped UL) and sleep terribly even when exhausted so now I carry my winter mat (Exped DownMat UL) year round. It’s insulated and just enough cushier that I can sleep decently and wake up ready to roll. Hammock doesn’t work well above timberline, for those folks suggesting that option!
I haven’t found a super comfortable inflatable pad. I toss and turn on all of them. I’ve slept on a Nemo Tensor, one of the lightweight Big Agnes Rapide pads, the lightest Exped one and a heavier Big Agnes one with vertical baffles. They’re all older, so not the most current models on any of them. I find the ones with the stretchy tops the most comfortable - the Exped and the Big Agnes with vertical baffles. The wide pads are slightly more comfortable than the regular width. That said, none of them is so comfortable that I actually sleep well. I usually just bring the lightest or warmest - whatever makes sense for the trip. Overall I think the Exped regular mummy with the stretchy top at 15.5 oz is my favorite? Maybe try one of the new Expeds.
This may not help in the short term, but I highly recommend looking into hammock camping. I genuinely prefer it to my bed at home. I also have a 3” exped mattress that I find very comfortable as well, although I would prefer the thicker model.

Exped
MegaMat Series
Car camping comfort king; warm and durable.

NEMO
Tensor Series
Lightweight side sleeper favorite, but polarizing on warmth and noise.

Exped
Ultra Series
Comfortable, quiet side sleeper pad; compact for backpacking.

Big Agnes
Rapide SL Insulated Sleeping Pad
Comfortable with unique side rails; R-value and durability disputed.

Therm-a-Rest
NeoLoft™ Sleeping Pad
Very comfortable; a bit heavy and bulky for backpacking.

Ranked #1
Exped - MegaMat Series

Ranked #1
Exped - MegaMat Series

Ranked #1
Exped - MegaMat Series

Ranked #1
Exped - MegaMat Series

Ranked #1
Therm-a-Rest - NeoAir Xtherm Series