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

Running these analyses costs money. Buy through my links to help keep lights on! I may get a small commission.
Typo: I meant ProLite. It was their original pad, and is still a classic. The current model is Trail Pro. It is slightly heavier (and more durable) than the original. https://cascadedesigns.com/products/trail-pro-sleeping-pad Surplus military pads sell on eBay. Try “USGI sleeping pad” or similar.
I really like the Therm A Rest Trail Pro. It's bulky and heavy, but it's extremely comfortable and easy to sleep on.
Thermarest still makes them? I have also seen knockoffs even in non specialty stores. I have an older Thermarest Trail Lite and Trail pro. The only difference to the classic mats is a few cutouts to make them pack smaller. I adore my Trail Pro. Very comfy, good R value, thicker than the traditional pads, packs reasonably small for it's comfort.
We just bought new pads this summer for sea kayaking. Space in our boats was an issue so we found a Thermorest model that folds in half before rolling. If space matters this will help. Thermarest Trail Pro Max. As I recall they about 2.5 inches. Maybe 3. Very nice surface and quiet to sleep on. The really cool bit of kit is an electric inflator I bought for packrafting by Flextail. It’s a small rechargeable 4.5 kpa pump that will inflate a mattress in a few seconds. It also has a light and you can even plug your phone in to the battery to charge if you need to.
Still on a Thermarest TrailPro and the Nemo Fillo Pillow and haven’t had any complaints. I also have a Big Agnes Rapide which is thicker but takes longer to blow up vs the Thermarest.
If you don't mind me asking are you a larger person? I'm around 270 and a side sleeper and have been curious about getting a different sleeping pad. I've been using the Thermarest Trail Pro and it's pretty comfortable, but it doesn't pack down very small

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