I've read about indexing and the depriming station being finicky on the Hornady AP. I have been watching ebay for a Hornady or RCBS single stage press for just this reason. Single stage will be way nicer for depriming and running small batches for dialing in loads pre production. I've heard that by removing the priming from the process that you eliminate a lot of headaches.
The funny thing is, even with all I have already purchased, there is still a list of things I think I need, not counting dies for doing more calibers. Missing from the pic is 2000 9mm plated bullets that should arrive tomorrow as well as a full set of single shellholders for the priming tool.