My vote is on the milkshake, because I have never tasted coffee and I am not in a tea mood atm !they aren't against the ahadith..
I will tell them to make du'a for you that Allah gives you the correct understanding and hikmah(wisdom)
I think this discussion should stop because there's no benefit..there's a hadith in which the prophet s.a.w mentioned that a house will be built in paradise for those who stay away from arguments..i'll search for the exact quote..so akhi do you want this reward..
so I think there are 2 very good options: maybe we can vote?
1 turn this in a tea vs coffee vs milkshake thread
2 let this thread die..