As for me My fav vintage Gillette is the Black Beauty. Great shaver elegant look.
Fat-handled Tech -- Great vintage razor to start DE shaving with. Very mild and forgiving but competent. I have my grandfather's that passed to me through my dad.
'58 TV Special -- I don't know why, I'm just fond of this razor.
British HD500 Rocket -- No frills but outstanding TTO razor. Efficient shaving tool.
British #58 -- same head geometry as the HD500, but more stylish. Great razor. Maybe slightly better handle feel and balance for me than the HD500.
British #21 -- In my opinion the high-water mark of Gillette razors. The best of all TTOs as far as I'm concerned. Slightly less mass than the #16, but I find it to be more efficient.
British #77/88 2-piece LC NEW -- Pivotal razor for me. The first OC I used that I liked. Use of TTOs dropped way off (to less than 5-10%) after my first shave with a #77/88
British Regent, all brass, ball-end, LC NEW -- I've use this razor at least 6 out of 7 days -- sometimes 19 out of 20 -- since first use. Picked mine up for about $12. I still think it's an ugly handle, but it just works for me. Perfect length, perfect balance, perfect range of angles, incredibly maneuverable, great feedback.
All of the above are Gillettes. I also have a couple of pre-WWII Rotbart OCs I enjoy and stir in occasionally.
My favorite vintage DE of all time is the pre-war (1930's) Belgian Lie Bel. Looks amazing and not many I've tried shaves as well as it does. I have to keep it put away otherwise I would never use any of my other razors