I'm glad you're able to laugh along with some intended humor (not everyone around here can take a joke

)
If I'm being serious though - what all do you have in the way of room treatments at the moment?
I ask because you already have some great speakers and more than adequate amplification. IMO, the greatest improvement in sound is going to come from acoustically optimizing your room.
If you've already treated your room though, then my vote would go to trying some new speakers. The amps that you already have - it would take a very rare circumstance for them to be the limiting factor in your system.
New speakers could (and probably would) make an immediately noticeable difference. Now, it might not necessarily be an "improvement". You're already at the level of gear where what you're mostly going for is a change, not an outright improvement.
And simply wanting something new to listen to, enjoy and ultimately change again at some point in the future - that's just what we home theatre nuts do! Just like any enthusiast of any hobby
So - if you haven't optimized your room with treatments, I'd go for that before anything else. But if you have, then I'd say your money would be "better" spent on new speakers. I put "better" in quotation marks because it isn't a case of expected improvement, but rather, in this case, just the way that spending your money is most likely to result in a significantly noticeable difference from what you already have.
And by the way, do you have the option to try some Linn speakers? Time and time again, I've found that so many people - not just myself - keep coming back to Linn speakers once we've heard them. It's almost hard to describe what it is exactly about their sound that is so appealing, but to me, it is just their complete and utter lack of any distortion and their unparallelled delineation. Want to pick one, lone instrument out of an orchestra and focus solely on that one instrument during a particular listening session? Linn speakers will let you do that. And it's darn hard to get away from that kind of sound for long before you find yourself coming back to it