I was just going to say the same thing. It's a good thing I bought it around its launch date--finding an instore copy is probably just as hard as finding a copy of ZOE2.
I thought it was great. As a matter of fact, I would go as far as suggesting that those who felt burnt by Star Fox Assault's lack of rail shooting should seriously consider buying a copy of PDO if they happen to be lucky enough to be near a store that has it.