I have a fat arse and biggish thighs. These are ok.
My pair are some years old and are one size bigger in the waist (I sized them wrong).
I have worn Uniqlo stuff in the right size and they're ok.
I wear ED55 Edwin jeans in a slim fit (with a bit of a taper) (30w ) and these are ok/v smart. I have another pair of Edwins in 30 W and they are obscene.
I think ED55 chinos can be picked up in the sales right now.