To me, the Skystriker will always be GIJ's jet of choice, but since I'm guessing you won't see a Skystriker any time soon, may I suggest looking for the Power Team Elite F-16? The Conquest X-30 is cool but I found it and its pilot a tad obscure... Plus it's a later-release. I think Ace would've moved onto a more modern jet by now though and the PTE plane, with the right paintjob, fits the bill I think.
I've not seen these jets in the Pittsburgh area but I had both so it'll be neat seeing them again. Loved teh Rattler and VTOL wings/jets. It was apparantly the most versatile Warthog in the world since it could keep up with the Skystriker in every way. Then again so could trouble bubbles.