Yeah, I hate the plastic too, I prefer the Bullets, for that reason.
Check out the Beast is back post and check out the Tomos Classic.
The Speedo on any Moped is about useless, but with Tomos it's not so much the brakes as those damn tires, they come with half-slicks, and putting Cheng Shin's on it improves stopping and cornerering performance a great deal.
Puch is a solid design as well, but if you get one with enclosed-chain drive, take that damn box off, cause if you ever break a master link, instead of throwin the chain, it wraps it around the rear sprocket, and will send you over the handlebars in short order.
-Ree