Edge and Extra is 2 different makes of (acrobatic) planes.
260 - 300 and 330 is different model numbers of Extra, where Extra model numbers is a mystery so don't try to apply logics to them.
Their flying characteristics is indistinguishable as models, as their characteristics as a model depends much more on which brand model it is, than which full scale plane its supposed to imitate.
Personally I prefer the (Composite ARF) Extra 330, for no better reason than appearance, and because I got one myself.