We have to record the Audio Output of any hardware synth like the SD2 to audio at some point if our desired product is a digital audio file of the performance.

That is done by connecting the Audio outputs (stereo L & R) to the Line Inputs of your sound device and recording the MIDI performance as it plays back from beginning to end.

This is the way to do it with any hardware MIDI synth.

The classical side of the SD2 works well, with the one caveat I have to give, that the vibrato on some instruments is a bit much for certain ensemble work.

This kind of thing is subjective, but I don't think that the SD2 can do the classical orchestra as well as either of the two softwares you mention, especially the Garritan GPO. Be advised that use of the GPO is "different" and nonstandard.


--Mac