Pipistrel is the most interesting company around at the moment. Not only did they manage to get 55mpg out of the new Virus, but the damn little LSA cruises at 147kts!
They also won the NASA green challenge with their super efficient electric aircraft. Try finding a car, any car, that can drive 100mph for 250miles whilst burning a single gallon of gas. Shows what a great future might lie ahead for electric. Pipistrel is at the very forefront here and they don't think old fashioned like all the rest. The Panthera looks great and I'm sure will be a huge seller. But what I'm most excited about is the electric version and the hybrid Panthera versions - they will be truly modern.
My prediction is this - by the time turbine manufacturers get their heads out of their a**es and come around to finally offer viable options for small GA aircraft - the game will already be over. Electric will already be the prime mover.