I never noticed any difference in performance wither 32k or 64k and I always use DiscEX, however it has to be either one of them or else DML will work as slow as a snail and freeze a lot, I learned that the hard way, surprisingly performance on Wii and Hombrew programs and games don't seem to suffer much if formatted with anything besides 32k or 64k though the performance increases when formatting with either one!











