Dave,

I believe you are correct that the new Elastique engine is 'on' all the time. The fact that the new RTs just released do not contain the +/- files indicate that. The 'High Quality...' setting is probably just an additional tweak. I've tried it and have not noticed any audible difference.

From what I can tell, the tracks will sound the same regardless of whether you choose to use the 'old' +/- files. I've noticed that generation is a little faster if using the +/- files. Seems like a major benefit of the new Elastique is a tremendous savings on disk space in that the +/- files are no longer needed.

So try all of the options first and decide what works best. Leaving the +/- files out there won't hurt a thing beside disk space. If your computer can handle the 'new' options, go for it.

FWIW, the ZPlane website recommends 2ghz CPU to use Elastique.

R