I had to decide between the Hornady and Dillon almost a year ago. I went with a Hornady and have loved it ever since. Not only has the press itself been great, the customer service has as well.
I dropped one of the priming tubes that you use to pickup the primers and the plastic tip broke, they sent me a new tube (not just the plastic piece) right away, free of charge, no questions asked.
On top of all that, you can get a LNL AP for 400 right now on midwayusa.com. The LNL AP is comparable to the Dillon 650, for 400 bucks.
5 stations, Auto-Index. For 400 bucks (Sometimes 450). Love it!
I say go Hornady. You get way more bang for your buck.