I have both the Musical Fidelity A5 tube CD player and the Cayin CDT-17A. I think the MF is the more transparent of the two and also outshines the Cayin with smoother highs and tighter bass. That's not to say the Cayin is not a very good sounding CDP. It is, but it is definitely a little more euphonic (warm) and if your system leans this way already, I would not go this way. If you're looking for a bit of warmth, it's a very good bet.
I've not heard the Raysonic, sorry.
Hens
I've not heard the Raysonic, sorry.
Hens