I have the Kryptonite, the Abus = +25% of the price of my upright! The Kryptonite 10%. The Abus is of course 10% of the price of my trike and when it gets a motor and is out and about would be the logical choice but I prefer two (or more locks) in that case. I am looking at fitting a frame lock, they are so quick and practical and with the chain let you attach to street furniture.
Buy Gold level Dutch rating system locks and take photo(s) of your bike locked to street furniture. If you bike goes missing show the insurance company the photo(s) and the receipt for the lock(s).