I think that the NYFU lock is pretty excessive, and it's beefiness is basically a gimmick rather than an effective tool against bike theft. The only way that thieves break high-quality Mini U-locks (when locked properly) is with power tools, usually an angle grinder, so all a six-pound U-lock buys you is maybe a few more seconds against such a tool.

Also, forget the Evolution and get the OnGuard Bulldog Mini. It rates slightly more secure than Evolution in independent tests, and costs half as much.