I bought my Apollo 16 after several months of research.
When it arrived, it had a small gouge on the faceplate. I emailed UA and a few days later was told it was IMPOSSIBLE for the Apollo to leave the factory damaged, and it was clearly a shipping issue. The unit was sealed and well packaged, and appeared to be unopened. It was obvious it came damaged from the factory. I wasnt asking for anything when I wrote, but a little plugin gift card or something would have gone a long way after shelling out $3100 for a not quite new unit, plus the hundreds of dollars I spent on plugs within days of purchasing.
Aside from this, the Apollo 16 is a fantastic unit, with great conversion, and the plugs are the best I have ever used.