I usually buy pea protein from MyProtein online. I personally find whey proteins to be way too sweet. The only issue is that it's thicker, so I need to use a blender, rather than one of those shaker cups.

Find a basic flavor like vanilla, and add fruit (usually banana for me.) You can add a non dairy milk of your choice, if you don't want to use water. Soy milk works well, and has bonus protein.