@typhlosion My impression is that it's a "not better, just different" thing. Brewing tea in milk vs water will affect the flavor, but not necessarily in a bad way. It'll just bring out a different balance of fat- versus water-soluble flavor compounds! You also will not be able to get quite as much flavor out of robust teas that benefit from hotter water, since boiling milk will scald. Use a little more or a little stronger tea and it should work out pretty well!