The optical Toslink connection from the Samsung as described here is set up to bypass it's DACs, so I was comparing it to CDPs, BDs and DVD players used as transports only in my system, IE unprocessed digital out to AVR. Not comparing with all CDPs listed above used as full-on CD players, IE analog out. For comparison with full CDP performance envelope, I only carefully compared Samsung digital to Arcam DACs versus the Yamaha CDC-715 analog out to Arcam AVR. I was making the point that the Samsung sounds good used as a transport sending bitstream data to external (to the BDP) DAC, and that the Arcam AVR400 internal DACs can sound very good in two channel when fed by an effective (raw bit for bit) transport. Good enough that I have lost the immediate urge to upgrade anything, and am now content to focus on listening to and increasing my collection of music.
In my system, it would be reasonable to expect that the Oppo 105 would sound better than the Samsung when both are compared as transports only, and might have better quality and implemented DACs and analog circuits compared with the Arcam AVR's internal DACs and circuits when the Oppo is used as a stand alone CD player with analog out and good cables. I haven't compared that in my system and have not critically listened to the Oppo 105 at a dealer, so don't want to say. I have heard the Ayre you mention at a dealer, and it is terrific. I would expect it to sound as good or better than the Samsung used purely as a transport with the Arcam AVR, and to be a clear step up over the Samsung transport/Arcam internal DAC combination when the Arye is used as a full-on CD player with analog out and good cables played through the Arcam AVR amps.
I should be sure to qualify my previous post as the best I have heard in my system, with the gear I currently have on hand. Not trying to make ridiculous claims here, just saying the Samsung BD-H6500 is surprisingly good used purely as a transport for CDs given that it is a relatively cheap mass produced box. If I could afford one of the Arye players right now, I would probably buy it. But yes, all things considered, I am happy for now.
Hope that helps put my points in perspective.