I loved Ace Combat 6, I did the campaign over and over, pushing up the difficulty each time. It's a barrel of fun, shame the Multiplayer didn't take off very well. Pun intended.
Worth the money if you need a break from FSX and love cheesey com chatter.
Who wouldn't love shooting 65 Sidewinders and dropping 16 half-ton bombs in the space of 10-15 minutes?
I never played AceCombat, but I've flown the AC planes in YSflight and they're more fun than a barrel of monkeys! Well, maybe not that fun, but you know what I mean.