One you can buy thats better is kiwi and gooseberry.
Well not sure if you can buy it anymore, it used to be a Supermarket fancy brand staple. Perfectly sweet and sour / tart.
we used to make all kinds of jam as we have literally every fruit going which wasnt that rare make fruit pies and jams daily. for many years. cant say i tried that combo but i get what you mean with kiwi similar but wild ripe strawberry just something a kiwi cant be beaten. its great to see some people know what goosegogs are. most dont by that name.