IMHO this would be an unfair comparison. The dollar difference is huge and the difference in performance is also. I A/b the Jupiter to a Cary 303/200 and it was not even close. The build quality of the Cary is substantially better, the Rega is border line cheap. The operation of the Rega is noisely... cheap. The sound of the Cary is so much better, more detail, smoother, much quieter background. The Rega does not sound digital, its is smooth and musical, but the background was the loudest of any player I auditioned. If you can buy one cheap, fine, if you are buying new look further. The Cary is much better, even something like a Arcam CD23 is easily better than the Rega.
I have resently traded my Cary 303 for a new 306 and that is a huge step up. So IMHO to compare to the Rega just is not fair.
Mike