We have both the Cecon and the Lauer systems. Both seem good the Cecons have been running 24/7/365 since 1997, with barely a problem, so I don't think reliability is an issue !
Fresenius also have a system which I believe has had a design change/improvement recently - I haven't heard much good or bad about it.
However I think the future is the CBCS1 available from my shed - see pix. Fully CE marked as you can see. Has run 5 machines without a problem during an exhaustive 25 minute trial.
This is our emergency back up in the event of failure of any of our 19 year old Cecons - risk assessment already written !