This 'biner is one of the lightest out there, but does not sacrifice size, making it an incredible for, well, everything. I use them to rack my cams, but have a few extra for alpine draws. I would highly recommend these carabiners over others—their light weight construction and larger size makes them incredibly versatile, but will never slow you down.
"Ridiculously light without sacrificing safety."
I've started moving more into trad climing and subsequently moving to lighter gear. The CAMP Photon was by far and away the lightest biner on the wall when I visited my local Moosejaw. Further, the spring has nice, sturdy action and the design of the gate makes clipping a breeze. I use these on all my cams now.