I still have it on one of my computers, but I probably should just get rid of it as I am certain I wouldn't miss it. It has useful midi editing features but very little in audio production capabilities. The arranger function isn't real time, so I use One Man Band for that.
The SQ01 soft sequencer that came bundled with my Motif still gets some occasional use. I also have a Korg PA80. SQ01 has better audio capabilities than XG works, and it will host Vst soft synths and effects. Some of these don't always work so well in it though. For example, it has a problem synching up with FL studio, which is one of my favorite apps.
So.. I use Sonar, which handles all my DX and VSt Plug ins flawlessly, and works well with my hardware keyboards as well. Sometimes I just use FL studio as a standalone ( it's more than capable ), and sometimes I open it up as DXi or Rewire device in Sonar.
The way Yamaha has orphaned things like XG Works and the SYXG 100 software XG module makes me less than happy that they decided to take over Steinberg. I hope they don't mess up the VST platform now that they basically own it.
AJ
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AJ