Should I consider using RS-485 for my next project
I've used RS485 to connect multiple data-loggers together over distances of up to 100m. In this application it worked perfectly. 

I haven't used RS485 to connect sensors directly to a controller but if you have sensors with RS485 outputs + a controller that supports RS485 and you have more than 10 sensors or the sensors need to be more than a short distance from the controller I would definitely use RS485 instead of analogue wiring. I found that as you add more and more analogue sensors to a controller (in my case, a data-logger) small issues with power supply noise, wire impedance and environmental interference suddenly become big issues.