I believe that you will be happy with either of these two CD transports you’re inquiring about. I have not heard the Jay’s Audio unit, but it has received much praise from happy owners.
I have owned the Pro-Ject RS2T the past 10 months and use it quite regularly and have experienced not a problem. I know that some have had quality control issues. Sonically its been superb for me. It presents music beautifully with a very emotionally engaging manner.
As you mention, I believe much of this wonderful sound quality can be attributed to the latest Stream Unlimited CD Pro-8 drive mechanism and Blue Tiger servo integration. I hope you are able to hear both CD transports and judge for yourself.
Charles