In reply to whereisearl:
I have the lefroy and psiphon. Used them for cragging, hiking and camping.
The Lefroy is quite a trim fit, well articulated, with good patterning and very breathable. Not very durable and keep away from fire. The Psiphons are ok. Slightly roomier in the leg and a little more durable, but mine began to fall appart at the seams. Thus are now relegated to 'sitting on the sofa' troos. Shame because the psiphon pullover is an absolutely excellent bit of kit.
An annoyance with all of these trousers is the short zippered fly and pockets that arent deep enough to hold anything of use.
My money would be on the Gamma LT's, tho I always miss out on getting a pair as the tall sizes that come in a colour other than black are annoyingly hard to come by.
Edit: What a wonderful contrast in experiences me and Ben have had with these trousers! But do agree you should consider sizing up as they do come tight in the waist, crotch and thigh.
Post edited at 13:41