I bought the Lite which is bronze, which I got for my ex's cheap
Decathlon folder. At the time there were only two models.
He was interested in this one because it was lighter. It feels pretty damn secure, but no one has ever tried to tamper with it, so that hasn't been tested. It really depends on how much you want to spend, how much weight you want strapped to your body, how much your bike is worth, where you are parking it and what your insurance company requires.
I find the 1kg lock comfortable to wear for commuting distances (say up to 15 miles). Haven't worn it on longer trips.
Could you leave the D-Lock attached to the bicycle stand at work? Then you could get a lighter Hiplok for stops on the way home, and weekend trips.