I bought some Asda Great bum jeans last year and they were exactly that.
Thought I'd get another pair yesterday but when I went in their range had changed - I bought a pair of straight leg jeans and when I put them on at home they were a terrible cut - loose fabric at the top inside of the legs jutting out so that it touched in the middle of my thighs, iyswim - they are going back today!
I don't have a huge budget. I'm a size 8/10, 5' 6", I'm 46 and have a bit of a wobbly tummy and quite skinny legs. Waist 28/29"
I would spend up to £45 on the right pair. Cotton drill trousers would also be acceptable - warm and hard wearing.
No skinny jeans as they emphasise my carrot shaped lower profile. no boot legs as I'm over them.