Pawlowski, it might be helpful if you stated what is so wrong with your system that you want to make such a major change. Your original post makes it sound like you're just bored and want to change just to change.
In broad generalizations, SETs can be very seductive, but it's critical that you match them to a sympathetic speaker and to appropriate music. Small scale jazz, female vocal oriented stuff, chamber music, etc. is better suited for most SETs than full scale orchestra, dance, metal, rap, etc. Of course there are people out there who listen to Metallica thru a single driver horn powered by 1.5 watts and think it sounds great, and you could be one of them, but most likely you're not. I've never heard the combination of equipment you have, but on paper it seems first rate. I suspect you will have a difficult time truly improving upon the overall sound quality. Exactly what are you trying to accomplish?
In broad generalizations, SETs can be very seductive, but it's critical that you match them to a sympathetic speaker and to appropriate music. Small scale jazz, female vocal oriented stuff, chamber music, etc. is better suited for most SETs than full scale orchestra, dance, metal, rap, etc. Of course there are people out there who listen to Metallica thru a single driver horn powered by 1.5 watts and think it sounds great, and you could be one of them, but most likely you're not. I've never heard the combination of equipment you have, but on paper it seems first rate. I suspect you will have a difficult time truly improving upon the overall sound quality. Exactly what are you trying to accomplish?