According to Strava I got about of 1700mi of all conditions use out of my last set of resin brake pads (Shimano part L02A for BR-RS505 and RS805 flat mount calipers) so I swapped in metallic pads (Shimano part L04C). I bedded them in today and took the bike for a quick spin. So far I agree with [MENTION=418438]TimothyH[/MENTION] in that they don't feel much different from the resin pads. Perhaps a touch less initial bite and a touch more stopping power once they start grabbing. At least in the dry. As I play more in the dirt and foul weather perhaps I'll notice a bigger difference. My hope is they truly do last longer when things get wet and gritty.