Locks that work

FAHG mini is great but consider using a good chain as your other lock; make them work harder by requiring more tools.

That said, I have an Almax Immobiliser as one of my secondary locks; not everybody is prepared to carry that kind of weight around.

I've always used a mini and evo .... can't be bothered carrying a ton weight. That said my bike is worth only 250, so who cares