I bought the B&M Beep and B&M RDC. The RDC looks really great and I especially like the directional and flashing lights. The BEEPs are just cute and fun. The BEEP seems very slow, and lacking in power. JxxTxxxxx, the dealer I bought it from told me that customers are amazed that is pulls better than larger more expensive locomotives.
Item shown is RMT-4421 as B&M #1703 BEEP® diesel.