Very late to the party, I too have moved away from the 5.11 look to a more Prana, Kuhl, First Ascent/EB look in my "tactical pants".
If I was still specifically after a cargo pant, the Wrangler Riptop sold at WalMart clearly exceeds the intersection of quality and value at 20ish per.
They come in a grey/greenish and a khakishi, are fairly abrasion resistant, breath well, can handle a 1.75 inch reinforced Wilderness type belt, will hold a crease/press and
are available/replaceable everywear.
http://www.walmart.com/ip/Wrangler-M...horts/14542025