Ares 2 keeps coming up all over the place. Will have to somehow demo one at some point and see if I can hear a deference.Exactly, those are both similar range of quality, same type dac. RME more features. Some people might notice a difference with a fast A/B switching. Some people might not notice any difference without that switch, and still would claim they are a world apart and they noticed. bias.
If you have a big house in the center of manhattan like the guy of the video, a 10 million euros house, or more, buy the bartok. Otherwise buy the Ares 2. You would certainly pick a bartok, it's a different type, if you have a revealing speakers of headphones of a certain quality. HD6xx or better you will tell the difference.
The Rme is a well built dac that looks great and has so many features I never use. It's pretty much wasted on me.