I've only got 6, 4 of which are in working order, and 3 of which actually get used.
Cabelas RLS something or other - my reel for my 7 wt, steelhead/bass rod.
Risenfly reel - large arbor, has become my main reel for most trouting. Travels between whatever rod I feel like using, but they're all 5 wts, so it's all good.
Orvis BBS - used to be my main reel but it's showing it's age. Still my main brookie reel, because it's lighter, and balances my short rod better. Have 2 spools for this one, one with 5 wt and one with 7 wt line on it. And I use the heavier line to "overline" the rod in the thickest of places, and the lighter one in more open environs. Usually I carry both spools in case I want to switch streamside.
Orvis Battenkill - was on my wife's rod which I got rid of. Now it's just a backup reel that rarely gets used. Occasionally if I'm outfitting someone else to go fishing with. Or on "big" trips with multiple types of fishing, I'll set up all three 5 wt reels with different leader set ups. One with a dry fly leader on the boo, the BBS with a brookie leader on the brookie rod, and this one with a nymphing leader on my 9 ft 5 wt Loomis. Then each set up is ready to rock and roll.