I’ve experimented with ableton live for a bit. One of the great things I quickly started to do was copying an instrument (or duplicating a track with an instrument). It allows me to experiment with the parameters of the same instrument on a new track and go back if necesary. I haven’t found out how to do this in Cubase 6.
No it’s a little different.
Create instrument track (from p.206 of the Operation Manual)
Right click on track, choose duplicate tracks (p. 75 of the Operation Manual)
I think you could also do this with presets. If you save the different patches under alphabetically consecutive names you can then easily compare them from the preset panel. Once you’ve finished, delete the presets you no longer want.