So I went for my first ride this morning. This bike has a LOT of pep to it! One surprise I found during my ride was that, even at PAS 0 (zero), the throttle still works. I live on the third floor of an apartment building and I was dreading how I can haul my bike up the stairs. I am glad that I did some research on this bike; when holding the '-' button, it supposed to start the bike going in 'walk mode' but this walk mode was so fast on level ground. At first, at the stairs, I tried gently to use the throttle but it was too awkward climbing the stairs and keeping the bike stable at the same time. Knowing that the walk mode was a little fast, I tried it out with trepidation. I didn't have to worry, the weight of the bike going up the stairs slowed down the walk mode and I was easily able to climb up the stairs and keep the bike stable at same time.
All in all, I am very happy with my purchase. Only thing I have to do is work out the C7 display -- lots of information on it and I can't find a manual for it.