Just realised my z3 compact is doing dumb stuff with the proximity sensor so it's next to unusable when making calls.
So here I am asking for advice on what people reckon might be a good replacement.

Things that are important to me are:
waterproof (aka as good as z3)
Compact size
Performs well
Price - am pretty gutted the z3c is a doorstop so less is better, but really don't want to go over $500
Buying locally is all good, but not a necessity.

Keen to hear your ideas.