These planes all fly well using Zenoah G23's and G26 engines. All weigh in the 12 to 14 pound range. Zenoah engines will outlast most pilots if treated well. I would think that with the popularity of the G26 and larger engines, there should be some pretty good deals out there on Zenoah G23's. I'd look for a good used G23, a little heavy but a mighty fine engine.