You know, I don't think I've owned ten pairs of speakers, but here goes on some favourites..
Epos ES14
Spendor BC1
Spendor BC2
ATC SCM20
ATC SCM20 ASL Pro
ATC SCM100A
AVI Positron
AVI N5
Harbeth HL5
Musical Technology Harrier SE's
Actually, I've owned a few more goodies
Linn Isobariks (two pairs)
Yamaha NS1000M's
And that's not forgetting the Keilidh's, Rega Alya's, Heybrook HB2's and B&O X25's (Dad ended up with the last three at different times), Snell E's (ugghh!), Kans (ugghh ugghh) and Audiomaster Image 1's and 2's
Tear down these walls; Cut the ties that held me
Crying out at the top of my voice; Tell me now if you can hear me