Wireless vs wires: hmm.. I don't think that's a very accurate question. There will still be wires in a wireless speaker system as far as I'm aware. There will need to be some transfer of electric power to the speaker, whether it be through a speaker cable or mains cable.. unless you opt for battery operated speakers.
If you spend time planning the location of speakers and the relevant cables (which remember is only one per speaker), the wires go absolutely unnoticed.