How many pair of speakers do you own?

B&W 7.1 setup in a dedicated HT room with JL Audio 212 sub.  
SONOS setup in rest of the house, 7 speakers and 3 subs with different configurations in each room.  

5 Pairs:
B&W 801S3
Thiel CS6* 
Acoustat Spectra 33*
Spica TC 50
NHT T-5

* not in use.

1-
THIEL CS 2.4 SE.

In use

8 Pair Indoor
2 Pair In Walls
6 Pair Outdoors

2 of the indoor pairs are in 7.1 setups.

So, 42 total speakers and 2 sub woofers - Yikes!

Multiple old speakers in storage.

Five pairs which I will eventually pare down to the three (the first three) speakers.

Altec 846A Valencia
Quad ESL 57 electrostats
Quad ESL 63 electrostats paired with a Gradient SW-63 (both are in need of repair)
Snell Type J II
Snell Type J III

As for future acquisitions, I may try to buy a gently-used Devore Orangutan O/96 at some point in time.   Once the Big Move from Southern to Northern California takes place later this year and my house remodel is done, I'll be running the Quad speakers with Audio Research or Quad II gear and I've been running the Altec's with my Shindo gear.

The "end of the road" is in sight!