I'd probably want the 610 over the 110 but that's not a clear-cut opinion. The 110 is old, goes back to the 70's, so it's ancient technology and could having age-related issues.
The 610 is much newer, from the 90's. It is digital, so the tones will be much more realistic, at least individual notes of individual stops. Whether the ensemble effect of a digital is better than an analog is open to debate.
But the 610 is fully MIDI-compatible, while the 110 would have not MIDI and no hope of adding it on, if that means anything to you. Also, the 610 has a very elaborate capture system compared to the 110. The 610 has a headphone jack, and also has built-in speaker switching so you can add external cabinets if you want to, though it plays just fine through its rather nice self-contained speakers. It has excellent digital reverb, as opposed to the primitive spring reverb on the 110, if it even has reverb.
The only thing the 110 would have in its favor would be the generally sturdier construction of these vintage consoles. The 610 may have a less well-built console, possibly a poorer finish. Also, the keyboards in the 610 are probably those slightly lightweight Roland units that they used in cheaper models back then. However, the 110 may also suffer from keyboard problems if it has the rubber upstop/downstop bushings that crumble with age.
So, on balance, I'd go with the 610 because it's so much newer and will sound better, I think. But you may have other considerations such as cost.