I've several, from about 5" or so all the way up to 18"
Rarely bother with the 18" now though.
Mostly use the 12" one, and interchange frequently with the 10" one.
I've a variety of different handles, put prefer my a mile the Unger Swivle lock one, particularly for pole work, much better than a 'fixed' handle.
I'd quite like to try out a wag-tail, I'll get round to buying a wag-tail one of these days I'm sure
Ian