Fit: I'm 6' 170, normally a medium is snug and a large is loose, but both are wearable.  This shirt runs so large that the medium is almost unwearable.  Medium in Columbia's featherweight hike is almost too tight - don't know why the sizing isn't at least internally consistent.

Weight: 6.3 oz med. on my scale.

Quality:  Stitching, materials pass inspection, inspire confidence in durability.

Performance comparison: Better in the heat than the featherweight hike; I guess venting > UL construction.  In terms of comfort and wearability it's pretty on par with ex officio's airstrip, although the latter has better venting and more bells and whistles (extendable collar with turtleneck button, adjustable back vent, underarm vents, security pocket, utility strap, pen slot) some of which I'd be keen to see added to the silver ridge.  The sleeve tabs are tedious to button, passing through a loop and returning to the tab, but I guess the loop is for a cleaner look.

Appearance: One of the better looking hiking button downs.  Maybe the best balance of features and appearance for going from trail to town.