HT 131 Bar Length

[saxman]

I am about to pull the trigger on the purchase of a Stihl HT131 pole prunner. My question is the bar length, The Stihl web site shows a 12" and 14" for the HT101 but only the 12" for the HT131 with a larger engine. Would anyone care to explain this to me and make a recomendation as the the bar length I should get, I am leaning to the 14" Thanks in advance for all the input.