I'm probably in that 200/300 range.All these incubator setups are making me jealous! I really need nothing fancy, so I am probably going to steer clear of the brinsea only because of cost. I am a complete beginner at incubating, so the easiest setup is the best setup for me. I have no idea what my incubating needs would be in the future, so I think that Ur's point about being able to incubate 10 eggs in a 20 but not 20 eggs in a 10 is a good one. In that case Im probably just going to see what is out there around the 30-40 egg range. I want to be able to hatch out enough birds that I can have some nice results. Some people raise 200-300 birds in a season, and while I probably wont raise nearly that amount, I do need to raise up a decent amount.