I have a Digidesign Mix core card and 2 farms cards sitting around rotting, and I was thinking about setting up a mobile rig in road cases with them. So with that in mind I am going to pick up 2 Apogee Rosetta 800's with the X-Digi-Mix cards to plug right into the Mix cards. Sound wise they should give HD a pretty good run for their money (which I will certainly AB when they come in and let you know.) Now I am just wondering about the Apogee Big Ben and whether it is worth putting into the system. I realize it has a better clock and better clock means better audio, but does anyone have one or a similar setup to tell me if the difference is worth the purchase, or should I spend the money on a Sebatron or other pres? side note: This will be a high end mobile rig, all mogami, Grace UA DWFearn Earthworks Pres, etc. Shed some light???