I have only one that´s full AE, the Minolta Himatic 7s (programmed exposure, it is shutter speed and aperture are set by the meter). The other automatics are either aperture preferred (Yashica Electro 35) or shutter preferred (Ricoh 500G, Konica Auto S2, old Canonet QL19). All my other RFs are only manual forcing me to use a handheld meter or camera´s meter if they have one.
I had excellent results with the automated ones, the only you have to, is to know how the metering system reacts (as said in previous entries) to changing lighting conditions, and how is the system weighted, either spot as in the Oly 35SP or averaged as in most other cameras. I found that average isn´t that, in fact all are some center weighted but with varying degrees from one camera to another. You can do a simple test using a white led and moving it in front of the camera within VF limits, and seeing how the meter needle moves on the scale. Shutter preferred and Programmed modes, both based on trap needle principle brings another benefit, it is to lock the exposure and recompose.
The only camera that brings no clue about what goes on is the Yashica Electro 35, but after seeing the results I trust meter readings/choice.
Cheers
Ernesto