[davey boy]

I recently got an Apogee Rosetta 800. I have it hooked up with light pipe into a motu 2408 going into Logic 8. Out of curiosity I bought the symphony cards, thinking that I might have less latency if recording though the software. Well, as far as I can tell it sounds the same as if I'm going through the motu stuff or though symphony. If I'm at a buffer of 64 I don't notice a drop in cpu load if in symphony. I was hoping that I could raise my buffer up in symphony, like 128, or 256 and notice less latency then the motu but I don't. Obviously if I turn off software monitoring and monitor through Maestro, or Cuemix then there's even less latency. So, at this point the only benefit I can see in keeping symphony is if I start recording at a sample rate higher than 48khz.
Another downfall with my particular setup is that I still need to get the digital outs of the rosetta into the 2408 to monitor through my system. When using symphony I have to go into the advanced routing mode to activate 2 lightpipe outputs. But, when I do this it creates a feedback loop if I record anything on those same inputs. So, now I only have 6 inputs. Another strike against symphony. I think the Apogee tech said this was a limitation of the Rosetta and that the x series are more flexible. I'm now intrigued at replacing it, or at least the AD part of it with the AD-16x. Does the AD-16x boast different latency specs for some reason? Anyway, I'm not bashing Symphony, I'm just trying to justify having it at this point and hope I'm overlooking something obvious.