We have recently built a new 20 tap system at our store and I keep receiving suggestions. A lot of people keep forcing this tube thing on me but I have no problem pouring a growler to the rim with little or no waste. With a good angle and keeping my eye on the beer it pours perfect. I've been countered with "The tube stops the oxidation to your pour so even if its foamier then the the tilt, its better." They could be right. I am just trying to understand it. The tube has air in it originally and so does the growler. Beer seems to circulate inside of the bottle when its being filled, not stay in layers. By using the tube to pour, does the beer that is being filled inside of the poured beer really stay less oxidized than the rest? And is it a significant enough reason to not continue to pour the tilt way?