A fairly new and electronically advanced manual focus camera with motor drive integrated, it has almost everything, plus the unique focusing aid within the Contax lineup. Unfortunately it has really slow response and works only for f5.6 and wider settings. Also there's a depth of field display in viewfinder, along which you can determine whether your object is within the DOF, if not at exact focus. Another nice feature is a low vibration system, which reduces camera shake and noise- in fact it's so quite that I couldn't believe it's SLR (around the noise level of Canon RT, which mirror doesn't flip, and probably less!).
Main complain about camera is the dark and small viewfinder (even 167MT is brighter), there's no way to add a vertical release, and the mirror return is much slower than the other two- then again this is not a professional camera. On the plus side RX has custom functions and programmable multiple exposure mode, also the data back comes with it imprints data between the frames too!