I was looking into these a while ago too. Eventually got a Meinl 12" Filter China, but since it was lacking volume decided to make a stack out of it. Slapped a Paiste 14" PSTX Flanger Crash on it and voila. Amazing stack!
Love the PSTX models. Also made a stack from a 10" Flanger Splash with a 10" Zildjian Oriental China Trash (which i'm going to swap with a 10" Filter China) and i want the 18" Swiss Thin Crash too. Great cymbals on their own, great cymbals to use in a stack!