I like these.

Bariatric Choice Low-Carb Liquid Protein Fruit Drink Concentrate - Berry Flavored Drink Mix To Enhance Water (7 Count) https://www.amazon.com/dp/B01EB64I1K/ref=cm_sw_r_cp_api_i_ebXfFbP2KEEX1

Some times I use two packets and make popsicles. Sometimes I add a crystal light to it. I think they are tastier than any protein water!