Stared 2018 with an Anet A8 I am currently running 6-10 FDM printers (depending on the projects I have running) and 1 MSLA (for detailed printer parts) printers. As my bedslinging PLA workhorses I run multiple Creality CR-10s Pro and Max since the share somehow the same parts are are basically the best you can get on the 300x300 or with my Max'es 450x450 bed sizes.
If go for other sophisticated materials or speeds, I run SecKit's (a SK-Go² and a SK-Tank) both on Klipper and a small 200x200 self built cube all driving Hemera extruders.
I mostly print for fun, but recently started to print for fund raising and with that I was already able to have a few thousand € donated to Unicef... this is possibly the best cause I can throw my hobby and my 3D printers at...
I am also pretty active in a few printer related facebook communities, so just ping me if you have some questions, I will try my best to help