Fred, I am with you there. Too much is never enough! Like when you ask a guitar lover or (any) fisherman how many guitars or fishing poles is enough, you get the same answer: "One more!"
I believe subs may fall into this category. ;o) I may keep my eye out for a second used Servo 15 sub an retire one or both of the 'filler' KLH's. But that is not a near term thought, because I am into enjoying now. ( for both my and my wife's mental health. )
Dave
"In theory, practice and theory are the same. In practice they're not."