The trouble with posting something like a bike lock as a “Cool Tool” is that few people have tested several locks and settled on the one that’s “best”. We can find a good balance between size, weight and apparent effectiveness, but to really test the effectiveness of several bike locks you need to try breaking them all - an expensive and exhausting prospect.
The Kryptonite Evolution is supposed to be good though, so I’m not criticising the author’s choice on this occasion!
When I asked around about bike locks recently, several people pointed me at this frequently-updated first post that lists effective (tested!) bike locks: http://www.lfgss.com/thread17938.html Abus are generally recommended as much as Kryptonite.