The downfall for the Symba is the manual pedal clutch/shifter. The local SYM dealer warned me that the mechanism is clunky, and he refused to order one for me. (Dealer refusing money. ) I ended up buying a second-hand one from Craigslist. The first few weeks, the manual pedal clutch/shifter was a novelty and fun. I up and down shift using my toes.. After a few weeks, the shifting became a hassle. The novelty was gone. I started getting frustrated because I was missing a lot of shifts and it gets real jerky when I screw up. I think the mechanism is really designed for 50cc, but they pair it with a 100cc motor. It takes effort and concentration to do a smooth shift. The upside of the Symba is the awesome stock luggage area. I mean it's awesomely robust. Very strong. The rack is mounted to very strong stamped metal. I think you can put a passenger and an additional 200 pounds of luggage with no problem. The Grom, on the other hand, has a weak-looking cantilever-style subframe, like dirtbikes. It can't carry any kind of serious load. That's why Grom is a bad Round-the-world bike. One would need to do some serious welding to make a Grom world-ready. It would be super awesome to put a Grom motor into the Symba and add long travel suspension; that would be the bike.