"I want to hear inside the music. I want to hear the room and the reverbs. I want to hear the spit on a singers lips. I want to hear 20hz on a 32' pipe of a pipe organ. I want fast transients. Above all I don't want strident cringing top end."
"Oh yeah. I want depth too."
Then I agree with @hifibouncer. I would try to take placement (and possibly maybe a few other room techniques) as far as all that might go, most of it involves just a little time and experimentation...not that much cost. It will even help with the harsh hi's.
However, if you're satisfied you've done all that and you Still have problems with harshness, then it is not really time to swap out gear, but instead I think Then it's time to start thinking about power treatments. But, working out the problem as much as you can passively (and also with EQ, if you like) with room/speaker interaction First, will go a long way toward preventing you from having to overspend when it comes to power treatments.