Andy, welcome aboard the good ship VAF
Couple thoughts for you -----Mehrdad's shorter time to build the 14 may be partially attributed to it being his second RV. No idea how much that factor is.
Instead of selecting a model based on the build time, I suggest you go get a flight in the various models.
Good luck, CAVU.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."