What are your tastes in music? Do you have an eclectic taste in music?
If that is true, you may be the type of guy who needs more than one pair of speakers, different types of designs and brands that sound different. Enjoy different sounding things for what they are.This 1 in - 1 out strategy tends to fail and you will be chasing your tail forever, unless you only listen to 10 recordings from 1 genre on repeat.
Some dealer/sales guy for a brand he carries will claim that 1 great pair of speakers ( whatever he carries, trying to sell you) should sound great for anything and everything. Such is never the case. 1 great pair of speakers are never all that F-ing great.