Interestingly I used to look after a Sachs Roadster for a guy. In effect they were a "parts bin" bike, but good quality build and not any vices. Suzuki motor, reliable, very user friendly, comfortable, and never sold ? Likewise the MZ Skorpian with it's Yamaha powerplant was a hugely rewarding bike to ride, didn't sell, and my pal who works in the San Francisco area a few months a year, keeps a Buell Blast as his transport. I've no experience whatsoever regarding the Buell, but the other two bikes drop into the same market as Enfield, perhaps without the kudos of the historical name, but certainly beat Enfield hands down on quality and reliability so why didn't they sell in their droves.