Canon 60D + Canon 300/4 IS. Handheld + vReveal software for "stabilization".
Maybe next time I will buy steady cam or new lens, with better IS (like 70-200/2.8 IS II). I am also thinking about buying Canon 5D Mark III.
Unfortunately I could not record more videos with those planes (I was only 3 hours on the air show and I missed second show of this planes in flight).