I think it comes down to what inputs you use and need. The DACs have gotten a lot better over the years but some other aspects may not have.
I have heard the 2700 and C49 in different systems. honestly they both sound fine. You would almost have to hear them back to back to hear the difference. The C53 would be my choice as I don’t like to mess with tubes. I feel the 2700 does not have a strong “tube sound” anyway. It is subtle.