OH if youve downloaded the cfs2 yak 9 I linked just delete it because I'm uploading an upgrade making the yak work for fs9, and it should show up tomorrow.
FS9 is probably the best platform for airshows at the moment, but i think fsx will start to pick up pretty soon.
Don't be too bothered about saying which aircraft you'll be flying yet, as there'll be a specific thread for that (two more, in fact). I don't even know what I'll be flying!