The top one is nice. It's a real moped. The bottom one is a cheap POS Walmart frame with a cheap POS Chinese engine kit. If one of those is what you want, you can build one cheap. If you want a real moped that looks like a bicycle, my guess is their lack of popularity is due to several things. One is cost. Look at the cost of a Whizzer or Solex compared to a Tomos Sprint. The Whizzer and Solex both cost almost twice as much as a Sprint. The second is laws. Laws pretaing to this type of vehicle are very confusing, even more so than a regular moped. In some states, they are flat out illegal, in others, they can be ridden like a bicycle, with no license at all. There are several states where the Solex and Whizzer cannot be registered or insured at all. Then there is the epa to deal with when talking about a factory made moped. Even Tomos is having big problems with that one. Then there is the be all and end all. The market factor. If you think mopeds are a niche market, and they are, these things would be much more so, and would appeal only to the hardcore fanatic. A company might be able to sell a couple of thousand a year in this country, hardly enough to make dealng with the epa and all the importing paperwork for. For that reason, I don't see the Solex or the Whizzer lasting much longer in this country. Look at things from the perspective of the general consumer wanting to save on gas. Remember, these are the type of people who would rather be driving either a huge truck, suv, or luxury sedan. A Honda or Yamaha 50cc scooter (or God forbid, a Chinese scooter) looks a lot more realistic and sensible to that type of person than either a moped or motorized bicycle. As the owner of a Honda Metropolitan, I can tell you they are a lot faster, smoother, more practical, more comfortable, more maintenance free, and more reliable than a moped or motorized bike. Most people (the suv crowd) also think they are a lot more stylish as well, at least until they hit their first pothole. They are not hobby vehicles, but thats not the way most people see them anyway. They are cheap transportation. The Met gets a genuine 100 mpg, better than any of my mopeds but the Solex. It is also possible to get more than 50,000 miles out of a stock Met engine. I have seen new Whizzers at a local dealer, and everything about them except the price tag screams cheap! I haven't seen the new Solex yet, have been hoping to hear what Brian thinks of them.