Service! KT service it the best in my opinion. Fast, reliable and responsive. and you can get support with just a phone call.
Runs on Diesel, Kero tends to be seasonal and hard to find at times and its double the price.
All of the G2 versions have the Auto Restart funtion
Cost. KT seems to be a few hundred $$ cheaper across the board.

Jetmunts are great engines, They would be my second choice if I did not have KingTech.