anyone got any recommendations for riding trousers?

nothing skinny/ too close fitting as my legs are pretty slimline

trousers - ron hills, shorts - endura mt500's...

I, too, am of fairly aero-dynamic build, but have recently bought a pair of Endura Hummvee baggies and I just about get away with it!!

Altura Attitude trousers are quite nice. Sort of a downhill-baggy fit, but with ankles you can pull in tight if you need to. And they come in black, rather than the usual wildlife-scaring colours.

I like the Ground Effect range