Steve,
I've been following the Airfix GB there too my friend. There's some truly outstanding works there. What nick name do you go by over at Hyperscale,so I'll know which is your project?
I believe your right about getting satisfaction from building the old and the new. With me personally I lean more toward the old kits as I view them as more of a challenge and take more satisfaction from that challenge. But that doesn't mean I don't build the new kits as well, just not as often. You got it my stash is both old and new too.
Highest Regards,
Gregory Jouette