CD players as a whole seem to be slowly trickling away. The Oppo would likely be a better choice IMO. I have not heard the current Marantz units, but previous ones I've owned had not blown me away. On the other hand, Oppo has consistently impressed with the many players I've owned from them. Having said all that, I do think the differences are subtle when comparing more expensive players. Going from my 83SE to the 105, the improvement is there, but very small; it was a bunch of other features that the unit has (like the ability to be used as a DAC) that make it totally worth it though and I'd say that's going to be as big a factor as anything in choosing a player. Going forward as well, Oppo support is likely to be significantly better than Marantz.