OP- The clearout price is great. I don't know if it would necessarily be "better" for CDs than the 306/200, which has a very good reputation, but I think the 600 is a good player. My only criticism, as a CD player, the spinner is a bit noisy, compared to some other players.
The upsampling options (does multiples of both 44.1 and 48k) and tube/ss stage are a tweaker's delight. I still have the stock tubes, but I don't find them to make a huge tubelicious difference. General tone stays the same, but adds just a tick and can take the edge off a bad rock recording--to my ears with just a slight loss of detail.
The main benefit, though, is that it is a good DAC, too. I think it's really good, but not quite as good as the similar DAC200ts. I haven't used it for DSD, with USB, or with BT, so can't comment there.
I'd have to double-check, but I think, like the DAC200ts, it has a volume control, too. Tried using the volume control on the DAC200ts, but, whether it actually "bit-strips" or not, I recently found it preferable through a passive preamp. I assume the DMC600 is similar.
So, my opinion, it's a fantastic value at the close-out price, especially if you need a decent/good versatile DAC or other features, and/or enjoy pushing buttons, and/or are considering eliminating a preamp or going with a passive. Strictly as a CD player, I think it probably gets to be a closer call on other options.