I have a really nice mod for the 5 port, we ran that motor for 2 years, I would put my newest version up against the Mg66 and other motors for power and mileage. I have been working lately on modding the cranks for mileage. I have 2 motors being tested right now and hope they are run at the Worlds this year. Regardles of brand I have been seing good increases in mileage and powerband.
Rex