Endura bib longs with clips in the braces for those "gotta go" moments and a soft waterproof outer shell up the front/inside from each ankle - just where the water hits you coming off the front wheel.
Top design - Ive hammered mine for years. They don't shrink or wrinkle. Not the cheapest and the logo wears off eventually but easily worth the money.

Altura Winter Cruiser.

i got 4 pairs of aldi £7.99 ones do everything i ask of them. have the tops too one i've had for 3 years washed weekly still as good as new
problem is getting hold of them sometimes

Yeah, I've got some ALDI ones - good for £8 but compared to Endura the fit is poor (maybe I'm not an "ALDI" shape!), the insert is rubbish and they don't work well in the wet. Won't break my heart/wallet if I snag them, though.
Assos kit is fantastic but the price! - the only way I've got some is because it was in a sale. Definitely not to be worn off-road.