Like the hippies used to say, "if it feels good do it." Note: that doesn't apply to scratching mosquito bites. But as for me I prefer a single pair of the best speakers I can build.
Does anyone play two pairs of speakers at the same time?
I have found that certain combinations of speaker pairs produce a better sound than the single pair alone. For example: Klipsch Quartets and PSB Image 4T (new tweeters from Vifa) Quartets inside pair and volume matched to PSBs. I have done this over the years and found some great combinations.