Sundown STX200 V Motard (Qingqi QM200G)

Hi there all. I am currently in Brazil and looking to by a Sundown STX200 (Qingqi QM200G)and firstly would like to get your opinions on the difference between the Trail version (STX) and the Motard version. I am aware of the Front end difference with the inverse forks but is this really an advantage of a bike of this type? Also the wheel size difference is really an adavantage? My riding will mostly be on the streets of Sao Paulo which in my opinion is simialar to trail riding :icon10:. Also would like to know from those of you with experience now that your bikes are 2 years old or more are you still happy with your Qingqi's? The bike I am looking at has 12,000KM and looks pretty well maintained.
Thanks in advance for your help