I've have the Topping D90 AKM which is about 5 yr old technology. I have never felt like this is the component I should upgrade. Bass, detail, quiet, neutral are what I like. The display appears to be going bad so I have been looking around.
Denafrips is not with Vinshine anymore. I see lots of the brand for sale. Maybe they just sell more. I have not tried an R2R DAC so I don't have an opinion.
Laiv is one I see lots of buzz about. Positive reviews. No used yet.
Audio GD was highly regarded but now don't hear anything.
Bel Canto, Border Patrol, Benchmark, Audio Mirror, Audio Research are all established brands with varied sound and design. Depending on your taste.