this game in my honest opinion is one of the best Combat flight sims i have played in years, and the downloadable content for this game add even more fun, especially the ASF-X "Shinden II" which is so awesome that it can maintain stable gliding flightand gain altitude in a stall due to the design of the Aircaft allowing excellent Airstrike capabilities.
Keep Low. Move Fast. First Kill. Die LastOne Shot. One Kill. No Luck. Pure Skill.
I've never played this installment, but I have played Ace Combat 3: Electrosphere. That is a fun game! And quite nostalgic too.
Been trying to get my hands on the other installments with no luck.