
Exped
MegaMat Series
Car camping comfort champ, but some side sleepers find it thin.

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The best at what? - Weight - Warmth - Height - Noise - Baffle arrangement - Inflation method - Shape (mummy, square, rounded) - Length type (full, 2/3, 1/2, true torso...) - Sleep style (side, back, stomach) - Color - etc... One person's ideal pad is another person's nightmare.
For quieter, go with something that includes foam padding. Moisture control, Im assuming sweat? I recommend geting a sleeping pad sheet. Silk ones are nicely cool to the touch. For side sleeping, the thicker the pad the better. You might enjoy one of these three: the Thermarest Mondoking (more air), one of the Exped Megamats (more foam), or a Hest (all foam). I hope you have a great trip!
If you’re not backpacking and can accommodate the space to bring it with you, I highly recommend a Hest mattress. It’s the most comfortable mattress/pad I’ve found.
If we car camp we use hest sleeping pads, they’re pricey but I’d say they’re just as comfortable as our bed at home. We place them side by side and put a blanket over top to cover the gap. They also hook together as well. In the backcountry we sleep separately because our inflatable sleeping pads move around too much, plus we like different firmness
I love my hest. It is expensive but well worth the price. I think this will be your best option for comfort
Honestly being a heavier guy and having trouble with the self inflating air pads springing leaks and de inflating. I bit the bullet and bought a Hest memory foam sleeping pad from rei re/supply best decision I’ve ever made yes their bulky and expensive but their have a really good r value and are more comfortable then any sleeping pad iv used.
They're not small - we have two - but are they comfortable. Also don't have to worry about them deflating. It take about a minute to roll it up. We manage to fit two in our Crosstrek Wilderness with all our camp gear, stacked.

Exped
MegaMat Series
Car camping comfort champ, but some side sleepers find it thin.

Exped
Ultra Series
Lightweight side-sleeper comfort, but a bit pricey and bulky.

NEMO
Tensor Series
Ultralight side-sleeper comfort, but slippery and prone to leaks.

Big Agnes
Rapide SL Insulated Sleeping Pad
Comfortable with side rails, but heavy and warmth claims disputed.

Therm-a-Rest
NeoLoft™ Sleeping Pad
Very comfortable, good service, but 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