To ARS Sonum/Merlins owners - Which CD player ?

Hi all,
Since we have pretty much same set up (Filarmonia + Merlin)
What is your best digital front end ?
Should a tube-base CD be too much ...tuby?
FYI: I currently using a Cary 306/200, was thinking to try AA Capitole, Raysonic 168, Ayon CD2 (all tube base)
Please post your comments
Thanks
Thuan