If you simply want the best tasting protein powder and aren’t going to be using it more than once per day, then I suggest just getting 80% Gemma Pea and 20% Rice, and do the Vanilla Cake Batter flavoring.
If you will be consuming shakes multiple times per day, you might want to increase it to like 60% Pea, 30% Rice, 10% Hemp. This will give your body some variety, and it will maximize the overall number of essential amino acids that are in your mix to give you the best bang for your buck. Each powder is just a little shy in different aminos, but not by much, so if you combine them then all 20 grams of protein for example, will consist of about the same levels of each amino acid. This would in theory give you more aminos for your dollar overall.