Hey Yes, if you're interested in getting a new sleeping pad, check out this thread/spreadsheet I made comparing the warmths/weights of many, many sleeping pads:
My first post in that thread includes the link to the spreadsheet and an explanation of the math involved. I recommend you download it and sort it based on whatever you're looking for; whether you want to get the lightest sleeping pad available, save money, compare only inflatable pads, or get the warmest pad for the weight.
Almost all of the inflatable pads listed are available in a small or torso length, and any foam pad could obviously be cut down to size.
I saw the Hyalite Peak Oyl Elite (short) listed on The Clymb yesterday for 50% of the list price and almost bought it--unfortunately its sold out now.
Let us know what exactly you're looking for: cheapest, lightest weight, warmest, or a mixture of the two. If you have the cash, I'd recommend looking at the Neoair X-therm, for its unbeatable combination of warmth and light weight.