Rondinax tanks...

[Vics]

This is the coolest developing tank I've ever seen! I'm not shooting film anymore, but if I were...
https://www.youtube.com/watch?v=Gdc6T6ydARQ

 

[Pete B]

I've both the 35mm and 120 version. Both work well.
Pete

 

[lawrence]

This thread should interest you:

http://www.rangefinderforum.com/forums/showthread.php?threadid=120164