The right answer is usually more than one

IMO, you can't go wrong with Western Mountaineering. They are pricy but worth it.

As for pads, really depends what you are doing, and how well you sleep on them, and how cold it is.

Me? three season I am normally using a hammock with a blue foam pad in it, or if I'm ground dwelling up high, I use a torso length Thermarest prolite. The pad on the ground is nowhere near as comfy as my hammock - but it's lighter when I'm doing long days with no trees to hang on. I might eventually decide to try a shorty neo-air. There are lots of good options out
there to try - but your sleeping bag will be your biggest investment.

Winter I use a big agnes wide insulated air core with blue foam on the top and the bottom of the pad. but my winters can be a bit serious.