The Rolleicord Vb

The Rolleicord Vb Type 2 is arguably the best model to get in the "Cord" line up. The Vb was was the last model to be made between 1962 and 1976. 

You can find them on eBay for an average price of $500 for one in good condition. Or you can try expert Rollei repairman Harry Fleenor who can also install a more modern ground glass to make it easier to focus. http://www.rolleirepairs.com  . There is also an abundance of accessories available such as bayonet filers, lens hoods, cases, 35mm film inserts, etc.

I had bought two different cameras and took both of them to him and he advised which was the better. 

Now the only trick is to make sure there is still FILM available for these gems. 
Camera TypeManual focus, leaf shutter, Twin Lens Reflex (TLR)
Format6 x 6cm
Film Back/LoadingStandard manual loading,put in film,match arrow to red dot,close back and wind to first frame; Frame counter located in side window;
Film Type120 film ONLY: 6 x 6 (12 frames)
Lens/MountBuilt-in 75mm f/3.5 Schneider Xenar taking lens and Heidosmat 75mm f/3.2 viewing lens
ShutterMechanical lens shutter; Shutter speeds 1 sec. to 1/500th and B with "X" flash contact at all shutter speeds
Shutter ReleaseAccepts standard mechanical cable release
Self Timer10 second delay
Flash SynchronizationYes / X for electronic flash
Exposure MeteringNo
Depth-of-Field PreviewNo / Depth of field scale on focusing knob
ViewfinderFolding viewfinder hood with pop-up magnifier and fold-out sports finder is supplied as standard; Checkerboard screen
Viewfinder InfoNo
Film TransportManual film winding crank located on camera body side;winding knob advances film,the shutter has to be cocked separately.
Multiple ExposureYes, by cocking the shutter and shooting without winding the film
Focusing SystemManual with rotating knob on camera body side; Minimum focusing distance 2-2/3'