In September, when I purchased my People 150, I had a choice between the 150 and the 200S. In the end, I decided for the 150 since the 200 was, as someone else suggested, 11 more cc's, 11 more pounds, and $500 more in cost. In the end, it didn't seem worth it to lay out so much more without any real advantage in speed. The 200S is also bulkier, but the storage space doesn't seem much better.
If it had a true 200cc engine in it, I would have purchased one instead of the 150. I hope Kymco wakes up to that eventually, but I doubt they will.