Pot sizes

[cirillonb]

I get completely confused when repotting as to whether this or that orchid should be allowed to be pot bound; whether otherwise 1/2 inch is a good up size.
Does anyone have or know of a list of potting suggestions by genera or even down to species?
Nick

[Ross]

Generally speaking, you should keep any orchid barely able to fit the next sized pot you would be able to purchase. Usually an inch or so bigger.