I'm a novice looking for useful advice...
I'm looking for a 5-7 bbl fermenter. Looking at the past threads it seems going used for a start-up brew pub is the way to go.

What are good resources for looking at a used system?

What brands/models should I look for?

I was advised to look at dairy fermenter as an alternative. Does anyone have experience with using a dairy fermenter, (pros/cons)?