I would go for:
1. Buff - can't imagine what a pig this must be to handle, but I'd love to give it a go...!
2. Spitfire MkV and Mk24 for comparison purposes - sublime to ridiculous?
3. EE Lightning - 50,000 ft/min? Can't imagine what that must be like! Hope I can scrape enough ££ together before old Beachy Head packs up and goes home.
4. Folland Gnat. Simply beautiful, elegant aeroplane. Wish the Reds still had them...
5. SR-71 - just for the numbers.
6. Any other British military jet, small or large, from 50's to 70's.
Edit: 7. A more recent daydream of mine - lake hopping in a DHC-2 (if my eardrums could stand it), comme ca...