Lock and bits is great apparently, but they fall apart :shifty:.
Back to the topic, I ride shit street on a 24" bike, with a ground rim (pretty old now) and a magura, and I run the new kool-stops that come as standard on most onza's etc, there not bad, mine hold without tar, loads of modulation for manuals, can add a dab of tar in the summer for a bit of extra bite, and the best bit is loads of people upgrade from them, so you can get them easily for pennies, mine were £2.
They seem to be lasting ok as well.