I like having a QR seatpost binder. Salsa makes a high quality one, but it's not cheap.

My knees are particularly sensitive to saddle height, and different shoes have slight, but noticeably different thickness of soles, changing the saddle to pedal distance. Summer shoes have the thinnest soles, then winter shoes, and then winter boots with the thickest.

The weather around here varies enough that I switch between shoes frequently, and sometimes forget to move the saddle to correspond. After a couple miles, I start to notice my knees if the height saddle is off. The QR makes for a fast saddle adjustment.