Thanks Joey. I've got a stainless steel travel mug version with rubber handle that makes about 2 cups, and a larger glass version that makes about 4 cups. They're fantastic. The only downside is that I have to boil the water seperatly. I could probably do it in the travel mug but I don't want to melt the handle. My old-style aluminum percorlator beats them on this aspect. (It's tougher than glass too.)