We use Frankenmuth insurance. Small company but they offer a pretty good policy, at least for us (commercial). We have all of our stuff insured for new replacement cost and we can set that amount (although, you can't cheat either, so on discontinued gear you have to use market value). Our policy covers everything - theft, breakage, you name it.
As said before - different country, different options - but I did it as
@Steve and have covered the whole lot and for a whole range of risks. Reason is that I have one Peli that keeps my entire gear in one box and if I go out, e.g. visit my frined in the NP, I just close it, put the black brick in the car and off I go with my backpack and some additional items like tripods etc. beside it. So, whenever something happens during travelling, the entire gear might be gone. The policy related to gear being not sold new anymore I also have to apply the used market average.
But I think of changing to insuring only individual items, because it is simply getting too expensive, considering I am not a pro and thus can't claim the insurance fee as business expenditure in my annual tax report ...
... or to a company offering an interesting model (Not knowing whether or not something like this would be available on your side of "the pond", I found it to be an interesting alternative):
Risks are all covered (i.e. theft, damage, etc.) and for the contract itself you can choose between home country (Germany in my case) Europe and worlwide.
The home country version then allows to upgrade the covered area for max. two trips per year lasting max. four weeks each per year to the next level (i.e. Europe or worldwide) and
the Europe version has the same mechanism to extend it to world wide for travelling.
The interesting point: Written notice about destination and the dates you are travelling is enough to get this extende coverage free of charge.
Compared with my current (static) insurance including travelling this would save me about 250 € per year.
In the US this would proabaly correspond to home state, entire US and worldwide ...
It is a bit like car insurances (especially pure online insurances) starting these days to adapt the insurance fees dynamically almost in real time depending on mileage and destination. It might be worth while keeping an eye on this kind of model merging into special equipment insurances like for our gear.