Just remember they are BMWs. If you cannot work on them yourself, dealer service will cost as much as the bikes, and BMW dealers are not known for being friendly. Parts are also super expensive compared to Japanese bikes.
2002 Vulcan 750, 2001 XT225
2008 Vino 125, 2009 Genuine Stella
2012 Zuma 125, 1980 Puch Newport moped