Left the store thinkin the HiSi i saw was dome perc, just looked it up and it was called a mushroom perc...is that the same thing? Good tube? for 220?
for 220 you could find better and dome perc is a dome with a tube in it with holes near the bottem (kinda like a shower cap but with alot more drag)
Thats not necessarily true, my domes have 6 slits each and there's little to no drag. I can't vouch for all domes though. Mushroom percs just seem like a gimmick. For 220 GMD/DWB on etsy can make you something sick.
its also called a U-Perc essentially, an inverted showerhead inside a floating dome. [ame="http://www.youtube.com/watch?v=WXOgzFIq2M4&hd=1"]hisizzle rizzle dizzle fa shizzle[/ame]
If thats what he meant then never mind; I've hit one of the HiSi U-perc tubes and they're pretty good.