Kitpicking - Action trousers

Okay chaps, time for your kit brains to spool up.  This LEJOG is an excuse for a kit refresh, and one thing I still don't have are some Heroic Adventure Trousers.  Combats are all well good but are heavy, bulky and slow-drying.  The cargo hotpants I got in Tignes aren't safe outside France!  Time for some small-packing quick-drying hardwearing versatile off-bike trousers.  Are Rohan worth the wedge?  How about the other name brands, Craghopper and the like?  What about high-street stuff?  Your wisdom is needed, as my trewcunning is close to nil.