For what it's worth, if you need a meal replacement shake, I firmly believe whey is a poor choice. I don't see the point of the massive insulin spike without working out and whey is notorious for its near-immediate digestibility (which is why it's so darn good post-workout), so it's lousy for keeping you full. If you absolutely need a meal replacement shake, I recommend something with fat, carbs and a slow-digesting protein. Raw free range eggs would be best, but I understand if you don't want to go that route. I would use either casein or egg protein mixed in whole grass-fed milk (or coconut milk if you don't do dairy) with berries, cinnamon (to reduce the insulin surge) and unsweetened cocoa powder. It's delicious, you get carbs for quick energy, slow-digesting protein to keep you going and fat to keep you full.
Don't put your trust in anyone on this forum, including me. You are the key to your own success.