Just sold my GN250, which has been with me since 2002, so I can get my license plate off it for my yet-to-come JH600. It is a real work horse. I have been riding it mostly in town around Shanghai until recently. (Discovered a motorcycle crowd in Shanghai a few months ago and logged on this motorcycle over 12k km in last 7 months.)
GN250 is an extremely reliable machine. Reasonably comfortable, simple, no frills, no hassle. Since owning it I have just changed a few times the spark plug, chain, battery, tires, clutch cable, light bulb, etc., those maintenance items due to normal wear and tear. It is an ideal motorcycle for travelling in China with enough speed and versatility for just about any circumstances. Parts are available everywhere, with many Taobao shops specialized in them. Help is next town away should you encounter any problems on the road. I am pretty sure I can't say the same about JH600.
It will be sorely missed. Below are 2 pictures I took with my cell phone for the second-hand motorcyle dealer (sorry for the picture quality):
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