For all the composited effects I used stock from 'Action Essentials 2' which is great but is still a little limiting as the explosions and debris aren't perfectly suited to really big bangs. Still - it's a great collection and let me keep my vfx stock budget under $100.
Thanks wheatgrinder... I think you're right, the planes should probably be faster too. I'll call it 'artistic licence' for now ;)
Looking forward to others comments...
This is the trailer for a no-budget short I've just finished for film festival entry; shot on canon 5d mkII with vfx comped in Apple Motion. Aircraft were made by a mate in Cinema 4D. Hope you like it - unfortunately I can't put the full movie online till it's been through the festivals. Watch...