Quality vs quantity. You need to decide this for yourself. Music is predominantly 2 channel, and games are predominantly 6 channel.
I personally prefer 2 better speakers than 5 lower quality speakers, because I listen to music 70% of the time, and 20% of the time watching Netflix/TV shows which are all 2 channel. I game only a small amount, but when I do, I care more about dialogue clarity than some ambient sounds.