I like Bon Marche straight-leg jeans with a bit of elastic at the side-waist. They're the only jeans I find fit me comfortably. They come in three lengths, which is good. Recently they changed the colours, and there's either a very dark blue without contrast stitching, or a lightish blue. I wore the lighter colour when my family came to stay and my daughter and granddaughter told me that shade of blue was "a bit 1980s". And there I was thinking how cool I was wearing jeans! I don't care, and they're lucky I'm not wearing polyester slacks with a sewn-in crease.
M&S Classic used to do some great cord trousers with a comfy waist, but then they changed them and substituted a thin, poor-quality cord fabric with a baggy bottom and a built-in crease, horrid things. I treasured my old pair, but then I spilled superglue on them so they are now relagated to gardening.