I read somewhere recently that Sony might be coming out with an RX10 V in the fall if you decided on that over the Panasonic and can wait. It will be expensive and don't know what it would offer over the 1V version. You can rent the Sony 1V from LensRentals who have a 15% discount if receiving item before 4/2/2021.
I have an FZ1000 and very much like the way it feels in my large hands. It's a great camera for the price and it takes excellent photos.
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