Good advice. I came here to post pretty much the exact same stuff.
I bought the OnGuard Bulldog Mini instead because it's cheaper than the Krypto and pretty much just as effective.
Always use the mini u-locks. They're harder to break into.
I also use their high-rating rope lock to loop from the lock and through my front wheel (it's best to lock your bike up at the rear wheel, through both wheel and frame. Example, but I don't detach my front wheel like they do), but those locking skewers look bad ass. As does the seat cable... I'm taking notes, myself!