Interesting question. Like many, I admit I like to pick music that sounds great on the system but I stay away from non-mainstream strange stuff, looking for 'known' music. Sometimes I like stuff with deeper bass (Lyle Lovett's Road From Ensenada) because most folks have no idea what a full-range system can sound like.
I totally get the 'emotional' aspect but for many listeners (non-critical ones especially) it seems they get that even from a decent boom-box... If they suggest music with decent recordings to listen to on my stuff, it's more of a win-win. Grin.