I think these are great locks - secure, quick & easy to use and pleasing in design.
I've just bought and fitted an Abus lock to my bike this afternoon. The instructions were hopeless. When I realised what I was supposed to do, it took me 5 minutes, but I'd spent an hour making various errors.
I'd fitted an Axa Defender to a PowaCycle in the past, and ended up using the cup-hook fitting kit from Axa, which worked fine. I went with the Abus this time because the shop-owner said she had it on her bike, and that the fitting kit was better. She said she'd fitted an Axa recently to another bike but given up on the metal ties and just used half a dozen normal cable ties.