Hey man first decide if you want a fast acting protein (Whey based) or a slow acting protein (Casein based). The protein in milk is 80% Casein and 20% Whey. So that means that in your shake you will have 16g of slow digesting protein and 4g of fast digesting protein. The carbs in milk are simple sugars which means they prolly aren't the best thing to have right before bed but would be good for a post-workout shake. divide out the price per serving and if its a deal and you like it go ahead.
I prefer a 100% Whey shake with little/no carbs before my workout, a 100% Whey shake with simple carbs after my workout, and a slow casein protein before bed with little/no carbs
5'10" 205 lbs
Bench @ 315 x 5.. 365 x 1
Squat @ 405 x 7.. 525 x 1
Dead. @ 455 x 10. 540 x 1
Lou Ferrigno: "I have nothing to say, I just wanna eat my cake."