i was at my local abc pool supply and they were trying to sell me a sys3 cartridge instead of a de saying that these particular cartidges rivaled DE as far as particulate size goes, but i haven't seen anything on the sta rite website stating this or even eluding to the micron rating. has anyone heard anything like this about these filters? i was looking at the 300 square foot one.

my old spin de has worked well but it's so old i can't even find parts for it anymore...