I have only done around 400 tests per month with it. I do love the fact it is more portable than the supernova. I used to struggle for some power supplies in a few areas. I don't think the supernova runs on PG3, i could be wrong. I still have mine sat as a back up.
yeah, the portability aspect is certainly attractive, but doing a 25A earth bond test was a bit of a selling point between me and a sparkie using a multimeter and a megger to test appliances. As far as I am aware PG will download/upload to a SupeNova- just can't use all the functionality of PG3 if you use a Supernova.
Some of your testing is being done in a really dirty location, so the fact that your Apollo has only fallen over once is a bit reassuring, it, though it looks like owning two will be the way to go (the price of peace of mind)
Had you cleared the Apollo's memory, or where you able to reconstruct your database from that?