Hi,
the beauty of this forum is exactly this: helping each other in many ways!
The chocolab is their latest creation, Fbm i think made it for multifunctional small/medium businesses and you could have all in one spot. i don't believe you could find it used as it just came in to the market.
I have a Unica 25kg with pneumatic depositor and i'm in the process to get another one with enrober (12 or 25kg depending on budget)
The best part of FBM machine is that they are easy to maintain an repair: we had once an issue with cooling (too fast) and i did use just a screw driver and the help on the phone by their technician (i live in South Africa), my local engineer loves the machine because if something brakes is easy to find spare parts even here in SA. I guess only the computer board must come from FBM directly for obvious reason..
If i would be in Italy/france/Spain area i would maybe buy second hand, but if you can afford it, buy it new.
Comparison with Selmi: i did work with some of the Selmi machines and they are also good, maybe sexier looking but they cost much much more, if they break is gonna hurt you... and i had a very bad experience with customer service, i still haven't received a quote after 2 years of asking..
Best of luck!