I love my magnum. My favorite moped by far. My MKII does over 30 stock, without any mods, and I'm sure I could make it pretty fast without any performance parts. Plus it rides awesome. I can stand on the pedals and put my hands over my head and it's straight as an arrow.
Plus I think they're up there with the best looking top tanks. Magnums and those red Batavi...HS50s?