My living/listening space is also my studio so there's a pair of low-mid tier Focal studio monitors with Sonarworks room correction. Also have a bunch of room treatment inc. big bass traps in the corners and bumpy foam on the walls. For anyone not into audio nerdery the point of all that is all that when you mix your tracks, what you hear in your studio is neutral as possible so they 'translate' to other systems. In short this makes everything sound tight.
When you get into this stuff and start reading forums, people say over and over that you should get your room sorted first before everything else. Good speakers in a bad room are practically useless to anybody doing serious mixing, because of the way the acoustics will skew your perception of different frequencies due to buildups, standing waves and reflections etc.
But the same applies to home listening, so when you see those crazy 100k systems in rooms that look like they've barely been treated, with bare walls and are often way too small for the speakers you really have to wonder. But it's a certain type who buys that stuff usually innit.
Anyway, good speakers are always a treat.