Tough call - there's so many good options. I'm having too much fun with my Gitane's - so I'd probably lean toward a Gitane Super Corsa or another Tour de France (it had Italian components0. Yeah, I know it's not Italian - even worse it's French.
Funny thing is I have most of a Super Record group from my dad (just missing a front derailleur and brakes) so this is a question I ask myself a lot as I peruse CL and Ebay.