It seems to be the consensus that the MS600 is better than the 218 so I expected to keep it for my 7K2's as well. However, I came to a different conclusion. As it is all subjective it might be my perception of course. I am curious in the 210 as well, It might be even better with RAAT. Or what would happen if you would upgrade the PSU of a 210..? On the size: I have not much space for equipment so it matters a bit. MS600 is large and I am always curious what is inside.

Main: DSP8000SE< 218 < Farad Super3 TMCB < PS Audio P10. Room correction: Focus Fidelity.
Second: Fostex Fe206NV2 < Audio innovations 500 valve amp < Wiim Pro +
Study: DSP33 < Reviver < MS200
Server: ROCK + Tidal on NUC, fiber on 2x cisco 2960, HD-Plex LPS.
Gone: DSP7200SEu, DSW, DSP5500mkI & DSP5000mkI, 508.20, 210