Thanks guys. I've gone with Lock On and will have to settle for the F-15 and A-10. They'll do just fine.
PS Andy: A very persuasive argument there, lol, and I must admit to not having tried Rise of Flight, but I will when the time is right. I had no intention of flying modern jets until I bumped into the apparently pretty engaging 'Hornet Leader: Carrier Air Ops', after finding 'Downtown: The Airwar Over Hanoi' unavailable.
It'll be an interesting experience after pretty much only flying a Stuka G-1/2 tank-buster in recent times, lol.
S!