Ivan you sound like a crazy nut who is trying to play head games with audiophiles lol.
Since you said you have a bug to upgrade I would say to try out some new wires. You could buy some used and you won't lose much if you dont like them you can just resale. Go for something in contrast to what you have now and see what you think.
If you wanted to do something big I personally would go for a top notch preamplifier. In my experience great preamps have rocked my world over any other upgrade. If you sprung for something like the CJ ART or ARC ref 3 I bet it would put a big smile on your face.
Since you said you have a bug to upgrade I would say to try out some new wires. You could buy some used and you won't lose much if you dont like them you can just resale. Go for something in contrast to what you have now and see what you think.
If you wanted to do something big I personally would go for a top notch preamplifier. In my experience great preamps have rocked my world over any other upgrade. If you sprung for something like the CJ ART or ARC ref 3 I bet it would put a big smile on your face.