Finished the game last Sunday and overall, I agree with F-22's sentiment. Its the best Ace Combat game since the PS2 trilogy, especially story and gameplay-wise. Defeated the final bosses with the Typhoon (as I used it for the rest of the campaign once I unlocked it), both of which were a good challenge, especially the tunnel section near the end (I disagree with the opinion that its more difficult than the ACES tunnel from AC5, admittedly.) I also teared up when Kei Nagase turned up.
Probably going to replay the campaign a few more times, as I tend to do with these games. Going to try and unlock the Erusian skins and a few of the specials.