I wasn't really asking about a particular heli in my original post (altho I am considering a Helipro BH 450 as my first). But as I mouse around various online stores just trying to get familiar with what's out there, many of them organize their helis for sale by CH. "Click here for all of our 4CH helis", etc. It has been confusing to me to figure out how 3CH are different from 4CH which are different from 5CH, etc.

I think the previous posts will help.

==Jeff