I've been collecting Mosaic box and Select sets the last couple of years although I have single CD earlier versions of the same music released by Blue Note and other labels. I've been impressed by the better audio quality of the Mosaics. For example, I had the original single CD releases of Tony Williams' Quintet. But the Mosaic Select CDs sounded so much better. They really captured the unique power and intensity of this quintet which I had the opportunity to hear live (one of the most incredible jazz performances I ever heard). So I am wondering if the Dexter Gordon Mosaic Select box set of Nights at the Keystone also sound a lot better than the original Blue Note CD releases, which I already have. Does anyone have both? Would be great to get your comparative assessment. Many thanks!