I don't really care for fruits by themselves & agree with @Capt.shay that fruits need something else in the mix to round them out. Obviously for you, that's not the case. So, for the Capella I would say 8% would be a good starting point. I've never used the Cherry Berry but based off your 1st impression maybe try it @ 6%. You can always add more. I hope this info helps ya. Good luck... 