Keith
The best camera is one that still works!
I've used a Bessa R3a and this is even worst in reading the shutter speed as it is too low in the frame line and almost often washed out. I have been and still intrigued by the ZI though and maybe sometime I'll give it a try.
I had an R3A and I prefered the position of the readout in the Bessa. I found with the Ikon I had to move my eye to the right of the finder to see the metering display ... when I did this I lost the contrast of the RF patch.