If you've played the second game in the series and want to add 3 to your collection, I strongly advise you to import the Japanese version. Simply put, the Japanese version is a 2 disk game featuring stunning animation and a well-thought out gripping plot. The US version? Forget it as it is for all intents and purposes a watered down empty shell of it's much superior counterpart. And any fan of the series will agree. You owe it to yourself to buy the Japanese version than the US version because it's an otherwise better product. The Ace Combat series are known for their strong gripping story lines and characters that you actually care about. You can tell a lot of labor and love when into this game; especially for those who had the pleasure of playing the import version.
I urge all Ace Combat fans to demand that Namco re-release this game in the future either in download able form or a remake. I think this can be achieved as there are many fans out there who still loves this series.