I have had all 4. Here is my break down:
I like to take the Vanilla and mix in one scoop of the Orange replenisher to make a creamsicle, that is quite tasty.
I also like to warm up the chocolate as I am a huge fan of the hot cocoa's.
As for strawberry, it is good. Best strawberry protein that I have tasted thus far. There is no fake taste, no overwhelming chalk taste. Last strawberry protein shake that I had prior to N2BM was horrible, 1 sip down and I was not feeling it. Personally I do not like strawberry drinks, however this was pretty tasty. For people who do enjoy strawberry flavor I say go for it, surely they will enjoy it!