Thank you to the OP for starting this topic, I have been on a similar search to update my Marantz SA-8004 in hopes of taking my disc spinning game up a notch. Marantz 30n, and KI Ruby have been on my wish list, and I've been looking at some older McIntosh players like MCD210. I'm a bit nervous buying a player of that age. My preference is a player that leans towards musical more than analytical. This is the first I've heard of the Denon A110, but it's mentioned several times in this post, so I'm adding it to my list.
@wjob can you expand on the sound differences between the Denon A110 and the Marantz SA-10? Is the SA-10 on par with the best of the best players?
@erock79 can you expand on the differences between your Marantz 30n and your McIntosh MCT500? I've been dreaming of a McIntosh SACD player in my system, but just struggle to come to terms with the price they command. The 30n comes in at a price point that doesn't give me heartburn, but I know there's no free lunch. If the MCT500 is that much better, I'll start saving.
My system is McIntosh C2200 to rebuilt Allen Organ C3 tube amps driving GR Research XLS Encores. It sounds great, but it's not as megabuck system like many here.