I'd go with wireless. less chance of a wire snapping and it all going wrong. Yes battery expenses will be there but at least it's better than wasting a ton more money on buying a brand new set because your last set broke due to the cable.
a50s are wireless right? lol someont told me the a50s didnt come with a wire and i was like is this guy dumb they are wireless? hahaha i would get the wireless as they would last longer considering you dont have to worry about broken wires