I bought a Sanwa last year and was really impressed with it. It had all shimano componets and rode really sweet. I needed a bike for my daughter and transplanted its parts to a Motobecane Mirage that fit her. I have the frame in my shop. It weighs in at less then five pounds. I liked riding the bike so much that I will revive it when I come across the parts. When my daughter gets a new bike I will probably parts out the Moto and bring the Sanwa back to life. I was tempted to try and turn it into an eight speed. I may still do that if I run across the right donor bike. Anyway, I like this japanese bike and would buy another if I found one.
Jim