I like using a whip. Keeps my head away from the glass, so I don't sit there, cross-eyed for 30+ seconds while I watch the milk. Also helps with that feeling of ur vape being attached to ur forehead. Haha. A whip also helps you control the speed of your draw, which is helpful with certain vapes (like the Fw7). I just think its more enjoyable to sit back, hold the whip in your mouth, vaporizer in one hand, and using the other to like this post.