I would say the indexing C Record, but put newer dual pivot brakes on. I don't recall you specifying that they had to be OT for us. For that matter buy a Record 10 group and you'll do just fine. I echo Richard Sachs' statement made last year that each generation of them just seems to get better, especially the brakes!
Loving the look of the old stuff, but the performance of the newer stuff,
Tom Sanders
Lansing, Mi