"Anebo" is typically used when the options are exclusive, either one or another. Like in this sentence.

In situations where you have a list of options but they are not exclusive (you can get a chocolate or strawberry ice-cream from the stall - meaning they have both available and you could get both if you wanted), "nebo" is better. Nebo is fine in both situations.

I'm not 100% sure but I would say that "nebo" is used more often.