Sounds like you'll like a pad, ~25" wide and partially inflated.
As to which is better, a pad is "better" for that sense of width; it also offers a little better view ('cause you're a bit higher up), and lets you go to ground if necessary. An UQ is "better" for being less bulky and probably less weight to carry. I expect most people will switch between them depending on their needs on each trip.
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