Rick,
I have a couple of the Larry Fast/Synergy re-releases, and a Jan Akkerman album, and I would say the sound quality is only okay, if marginal. The first Synergy one, -the best one, is better, and it sounds pretty good on a non-OS DAC I would have to say.
My brother has a Nektar CD from Passport, 'Remember The Future,' I believe this to be an early CD, and he said the quality really got in the way of the power and the glory of the vinyl one, which has to be heard to be believed, one monstrosity of a band and album.
Hope this helps.