Well, I have three on the Isle of Man (06 RM Blizzard, '88 Explosif and the Platsa Blue SS) and my wife has one ('93 RM Equipe aka "Rosie").
Then we have a '95 Kilauea and a '93 Blizzard in Greece.
So that's six altogether then, and realistically I suppose I could get rid of the '06 Blizzard and the '88 Explosif, although as I've owned it for 20 years I'm not really likely to do that.
That only leaves the '06 Blizzard as a thinning out candidate, although I am thinking of taking it out to Greece and bringing the Kilauea back here.....