There have been several Sold Secure locks that failed miserably, due to that Sold Secure has introduced a higher level of security than the Gold level, they now had a Diamond level. The Hiplock Gold, TiGr, and Litelok, all failed simple tests on YouTube.

I have two lock set ups for my bikes. One of the bikes I take to work and leave it outside where I can't see it for hours, that one I use the Master lock combo lock with the Abus 6ks chain; but when I go bike camping, I take a security cable instead with the combo lock because that locking system is lighter than the chain system by quite a bit, and since I'm near the campsite I'm not worried about it, but I am worried about weight so the chain stays home. If you are extremely worried about your bike getting stolen while you're away for several hours, like at work or at school, I suggest buying a used $350 or so bike and lock that up instead of a good bike; my commuter bike I paid $40 for a 1984 Fuji Club, it is in excellent condition so I don't want it stolen, but if by chance it did get stolen, I won't be crying about it.

There is a little test you can take on the website below to help you figure out just how tough of a lock do you really need.

Sold Secure Gold Bike Locks: The List - The Best Bike Lock