For me it revolves around what I could afford. I've always wanted an excellent sounding system, and have spent the last 28 years getting there. I bought the best sounding basic system I could afford, and then slowly upgraded each weak link as I learned more about audio, and when funds allowed (this includes tweaks). I am still at it, having just added power conditioning, which will be followed by power cords and then a new CD player. Next will be to add a turntable, tuner, and an SACD/DVD-A player.
I am thrilled with the sound of my system, and I thoroughly enjoy the way I have approached it. In recent years I usually change something about once a year, giving me plenty of time to enjoy it while I research my next purchase. This way, each decision is carefully thought out to the best of my ability.
It sounds to me like you already have the makings of an excellent system already. If it was me, I would maximize what you already have before I changed anything. Since you didn't mention cables or power conditioning (unless it was just an omission), I would start there. Had I known years ago what I know today I would have added power conditioning long ago. Only by trying it did I find out how much dirty electricity affects the sound of audio electronics. This would be my recommendation - make this change and you will realize the full potential of your current and future equipment. You may find your current system to be so enjoyable that you won't want to change it, or if you do it will be for the right reasons.
I am thrilled with the sound of my system, and I thoroughly enjoy the way I have approached it. In recent years I usually change something about once a year, giving me plenty of time to enjoy it while I research my next purchase. This way, each decision is carefully thought out to the best of my ability.
It sounds to me like you already have the makings of an excellent system already. If it was me, I would maximize what you already have before I changed anything. Since you didn't mention cables or power conditioning (unless it was just an omission), I would start there. Had I known years ago what I know today I would have added power conditioning long ago. Only by trying it did I find out how much dirty electricity affects the sound of audio electronics. This would be my recommendation - make this change and you will realize the full potential of your current and future equipment. You may find your current system to be so enjoyable that you won't want to change it, or if you do it will be for the right reasons.