If you guys wanna play pipes, a converted G26 weighs 2 1/2 lbs, turns a Mejzlik 18-6 10,000 rpm on the ground with a Mac's Products pipe at almost 7000 feet altitude in Williams, AZ......I HAVE BEEN THERE, many times...
the actual measured thrust at 9000 rpm is 17 1/2 lbs...If there's a better engine out there, by all means buy one....