I own both a 2007 Suzuki Burgman 400AN, and a 2013 Vespa 300 Super.
I had no questions regarding quality. The Japanese Suzuki has +34k miles and has never had one thing go wrong mechanically. I am strong on correct maintenance, fluid replacement, oil change intervals, tires etc.
I love Vespa and always wanted this classic. My new Vespa 300 Super arrived from the factory with the water pump gasket improperly installed.
The dealer promptly corrected this problem. But, here is the point, I
do not expect the Italian product to be as mechanically sound as the
Japanese product. The Japanese have some "Constant Improvement"
factory process going on. I own three Honda vehicles, 2005 Accord,
2011 CRV, 2013 Fit. NOTHING has ever gone wrong with these vehicle.
I am 66 years old. When I was young, products from Japan were junk.
But, they were dropping cheap product reproductions on the USA market.
China is doing the same thing with scooters. Obviously, the Chinese
are extremely capable of high quality - look at the electronics manufacturing sector.
Sound Advise: In the two wheeled transport world, Japan is much better
than Italy, Italy is much better than China (Except Taiwan).
Further, being that 90% of us USA folks no longer have hands on
mechanical experience, it would not be wise to recommend the purchase
of Chinese Scooter.
Live Long and Prosper!
Minneapolis MN USA