The Kryptonite New York 3000 isn't top of the range but is plenty tough enough to repel most criminals and is a good choice for everyday use where bike security is a necessity.
The New York features a 16mm hardened steel shackle and a disc-style cylinder with three keys supplied. The shackle locks at both ends into the base, and the lock mounts onto your bike with a metal sleeve on the shackle which slots into a resin bracket. The lock stayed put well over rough roads, and the LED key is a nice, if increasingly common, touch.
The Squire Urban Paramount boasts a Sold Secure Gold rating and a 10 year guarantee, so we were expecting a good level of protection, which it certainly delivers. However, our efforts attacking the lock, while we didn't break it, rendered it useless for the next trip: not a good thing.
The Urban Paramount is a good quality U lock with a Boron Steel shackle double locked at both ends into a hardened body with a very decent 6-pin tumbler mechanism. There's a mount included which is functional rather than great, but holds the lock fairly steady.