Suggestions for sleeping pads?

Hey guys, Looking to do some more camping but our sleeping pads really suck. My gf has a bad back and the thin foam pads are super uncomfortable for both of us. I'd like to get a couple inflatable pads that are fairly thick and comfy. We'll likely mostly be car camping so ultralight isn't super important, but I also don't want to hate myself if we backpack. What pads/brands would you all recommend? I've been looking at klymit and big Agnes mostly. Prefer to stay under 100 bucks per pad, but I'm flexible. Thanks