My c-5 is incredibly steady and reliable. To be frank the ONLY time something bad happens is due to me messing it up, or a batter in a sensor dying before I get warned (device issue).
I have a C-7 waiting here for me to migrate over to, but given the hassle am waiting for the migration tool I hope they release sometime next year.
Edit: I will add that I do do a weekly "soft restart" using the wonderful Rebooter App, that was mainly to solve some very minor slow-downs I had 6 months ago, which might be fixed in the latest Hubitat versions.
