Didn't like the shake cake...

 I ordered a pack of samples of Nectar.  And I mix it with crystal lite or the like.  It's still protein and I know it's protein but it's not milk or chocolate based so I'm good with it.

I think I tried about 22 different brands or flavors of protein powder before I found what works for me and ever since I have just stuck with it. You need to just keep trying. Hopefully you have found great success by now. Keep at it. Also, the advice about changing up the  temperature of the liquid you mix it with is very good. You never know. I can't drink mine without mixing it with ice cubes. I am also lactose intolerant so I normally use water or rice milk. If I want a thick, milkshake treat I use half and half and a lot of lactaid. Yummy!