I didn’t find that to be true. Reds have a berry flavor with lot’s of tartness. Flavor is not rich, or have much depth. Still I like berry flavored anything. Whites have a citrus like taste and are very tart too! The sweetest by far are the pinks. Best taste I think.
I have had this problem with in ground plants. They do eventually take off. In containers they grew much better. I think you need to dig soil up amend and the loose soil will help. Where I have trouble is ground that tends to become very hard.
I like to make a syrup to use in water mostly. I love to consume them like this. I have made jam and both make good jam, but I still prefer the syrup. Raspberries added give the flavor more depth. I’m down to one gallon of frozen strawberries, some peaches and nectarines frozen, and about 1/2 gallon of black currant syrup.
The blacks are special, I like them the best. I’m thinking of adding other berries in the future. Autumn Olive Goumi etc. Although I do have a lot now. My honeyberries are getting old enough where I’m getting decent yields now. I’m going to try making some honeyberry raisins next year, see how I like them. Can be used for cooking that way too.
Harvest from Aurora (2019)
I also grow
Unknown Thompson cultivar clone from Thompson gardens.