This is my second Hyosung motorcycle. In February 2007, I bought my very first bike, the Aquila GV250. It too handled great and quality wise the only problem I had was the plastic chain guard (but the dealer gladly replaced it under warranty).
I was very satisfied with the GV250, but as I became more comfortable riding a motorcycle, and with the amount of riding my husband and our friends do - it had become apparent that I needed to graduate to a bigger bike with more power. I started looking really hard at the GV650 and at the usual manufacturers - there are a lot of very nice bikes out there, but the sleek lines of the GV650 stuck in my head. After going back and forth for a couple of weeks, my husband insisted I go test ride it - that's all it took!
I've had the bike for 3 weeks now. Wow, I can't believe it took me so long to make this decision. I wish now that it would have been my first bike, but as a new rider I didn't want a bike that was too heavy for me to handle. I now know, the lighter bike is better for sitting at a stop, but for actual riding the heavier bike provides a much smoother, more comfortable ride.
The GV650 has a low center of gravity and a wide rear tire that makes it handle curves like a dream.
The sleek styling of it has people at stop lights asking me what it is and where they can get one. I've had several enthusiasts come up and ask if it is a Harley V-Rod.
My husband and our riding companions have all taken it out for a spin, and are very impressed with the amount of power and control it exhibits.
One of my big concerns when I was thinking about buying a bike from a relatively new manufacturer (in the US) was the infrastructure to support the bike. Granted, you do not have the number of dealerships in every city like the major players, but I looked and found at least 5 in a 30 - 40 mile radius.
Because I have not had any problems with this bike, I can't speak to the service on this one, but my GV250 had 2 problems - the muffler showed a little rust and the plastic chain guard broke - both were replaced under warranty at no charge to me.