Zongshen ZS125-48

I've found details of the Zongshen ZS125-48

http://www.zongshenmotor.com/Product...fo.aspx?ID=242

They seem to do various different versions with or without the balance shaft. In your guys opinion do you think that the CBB133 engine is any better than the CG125 engine option?

CBB133 is an OHC (chinese industry term for Honda vertical OHC clone = "CB") engine. "CB" had more power during high-rev than the pushrod (CG) cousin.
A common chinese description : CG = donkey CB = horse