wow the phx i wouldn't think would perform that bad based on their name, the design doesn't look terrible either but that perc must just do nothing right... for the crashed course 9perc tube... Correct me if I'm wrong. but I believe the top big perc would function!!!! -- it wouldn't function like a perc inside of a perc (4.0 glass eric ross) but the low big outer showerhead/circ WOULD be able to hold water on the outside, and diffuse... im not saying anyone here should change their minds about it, no one should ever buy that piece... if you filled up the bottom chamber with half or full water it would just suck into the top chamber lololol.... so bad. i'll stick to my micro 7-13 made by people who are passionate about funcionality and performance Edit:: Great thread though!!! I love it!