Well I got my new Vortech MP40's today. I set them up and fiddled with the settings for 10 minutes or so. Suddenly there was a loud thumping noise. Not to worry, it was just the sound of the old Korallias hitting the bottom of the garbage can.
The MP 40's are amazing, I should have got them a long time ago. Turned on high they blow crap out of every rock in the tank. Don't need any detritus eaters with these things; crap blows up into the water column and down the overflows. I haven't decided which setting I like best yet, but am leaning toward either Long Pulse Mode or the Reef Crest Random Mode.