Buyingchina,
I can only attest to the LF250. My wife bought it for me as a surprise Christmas gift fom an American Lifan dealer who was very motivated to sell in November of last year. She negotiated them down to $1,425.00 and they had to deliver it. It included the crash bar and windshield.
It is a great ride, unfortunately though, the stinkin' weather here in S.W.Ohio won't allow me to ride much. I have put 243 trouble free miles on it though and I just love it. It runs great, rides and handles well, and I am really impressed with the acceleration and stopping. I managed to take it out last Thursday and yesterday and today it has snowed like hell here to the tune of 10.5 inches and it's not done yet. I can't wait till spring. There are pics of it in the "Pictures and Video" section of this forum.
CC