I have two Digital Echoplexes. I was wondering if anyone ever tried using chips having memory larger than the 4 meg that is recommended and what success they had? Would it work with the new Aurisis software? Though I am a little late in making upgrades, what is the difference with using parity and non parity chips? Is there any advantage to either? And lastly, what can I expect to get if I use a faster chip (60ns vs 100ns)?