Some great collections there. I've been lucky enough to collect up a few bits and bobs over the years picking my favourite is tough.
Vampire T11 XE921 Gun fairing
Lightning Radome
And what looks like my own bone yard at the moment while my storage is sorted, Canberraman may want to look away. I have probably the last mortal remains of VC10 C1K XR807, Canberra TT18 WK122, USMC McDD Harrier AV8B 163423 and Comet C4 G-BDIT formally XR395 which was the first delivered to the RAF and oddly as G-BDIT it starred in the Madness Wings of a Dove music video while at Blackbushe.
As for favourites it's either my VC10 Conway LP Compressor blade or my HP Victor K1 panel which is currently getting a little liver by the day!!