How many audio systems do you have in your home?

Curious as to how many systems do your have in your home?
I at one time or another have 3 mid to top tier sytems, one in family room, one in basement and one in main room (living room, HT room)?
Currently, my HT room has the best electronic, then the family room, and than basement.
Due to limited finance I will have to cut back on my audio toys to finance other needs, such as summer camp, summer vacation, etc. (things associated with having kids).
I am undecided in either going for a very budget minded system in family room and basement or just running speakers to those room from main room via an ABC switch box.
Are any of you currently in a similar situation or have been in such situation? What route did you take?
The family room/basement is mostly background listening.

Thx