The one in my profile is a Limited Edition , the DX200Titanium, of Dx200. I liked the Dx200 as I would look at it and 1Z side by side. The 200 has a different ways to present the music and soundstage than the 1Z. But the 1Z should be more realistic and with emotions in compare to 200 which is more about details and air.
I do opt for Dx200 further because I only use full-size headphones, so I need power, and Dx200 has the ability to swap modules to satisfy driving power. I also love soundstage and airy presentations. Therefore, I opted for DX200Titanium. The Dx200 is also able to be used as External USB/DAC that can play DSD512 too.
Ounce quality the DX200Titanium is slightly better or at least equal to 1Z, and 1Z is slightly better than 200. Depends on what features you want, and how practical each players are for your desires, hen you can grade them a bit different. In overall general, I would rate Dx200Ti >= 1Z >= 200