PDs is better. More precisely, AE is not well designed:
AE-lock is gotten by pushing constantly on a small white button close to the secondary shutter which makes operation with ae_lock difficult.
As mentinned earlier it will drain camera batteries if you forget it (which is really annoying).
Exposure compenstion is difficult to obtain since you need to change film speed.
The leds in the Pds are nice enough and clear.
Thanks. I have pretty much decided that I want the metering but don't need the auto-anything, so will likely go with the PD prism.