I was thinking the same thing about riding style would highly affect wheel size choice.
Sounds like we need a poll on the types of riding folks do too, eh? 
Also, not everyone has tried all sizes either.
Having only tried a 24 and a 27.5, I picked 27.5.
(Which seems to be a favorite size for muni).
I have no idea what I am missing in a 29.
The 27.5 seems tall enough for me for now!