The trango neoclassic locking carabiner is a pretty lightweight, compact carabiner. It is a bit small for use as a belay carabiner but manages fine. Great for anchors though. Again, its not the lightest but the green gate makes it look really cool
I got this Carabiner in a whole harness package and it worked very well. It was good because it did not heat up a lot when i belayed with it for a long time. Also, the screw stop does not become tight under pressure like some do. Great product and i would definitely buy it!!