Bare wire will work great with the QS8's. No need to get fixated on using Banana plugs because the only benefit they will provide is the convenience of disconnecting and hooking them back up. Since they are going on wall it is unlikely you will be moving them around too much.

Banana plugs do not offer any sound quality advantages over spades and bare wire so in the end nothing to be worried about :).

Hope you enjoy your QS8's! \:\)

Cheers,

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne