Those flat bottom Techs look great, and from the sounds of it, shave great. I can dispose of those lesser razors for youMy ultimate shaving pleasure has been the discovery of the magical (made only in England) Gillette Flat Bottom Tech.
I saw pictures of one and thought "I must have that!" Eventually I found one (user grade) on eBay UK (I'm in the UK):
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I loved it instantly and went looking for a NOS version straight away.
To my surprise, one turned up on eBay UK a week later and I purchased it instantly:
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The shave was equally as brilliant as with the "user grade" model (which I subsequently PIFd). Unfortunately it had been stored poorly (somewhere damp) and well shaken about, so the plating (although good) wasn't so great as one would expect from a NOS item.
Always in the search of perfection (an expensive malady), I found another NOS one a month later:
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This one shaves exactly like the others, and the plating is near perfect. So the previous one got PIFd as I'm not a collector.
Being an LHF (Lightweight Handle Fanboy), its head now sits on the magical GT Handle made by my good friend Doug (@Rosseforp):
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And of course, I'm looking forward to more of the same in 2022.
I do still shave with some other old favorites (e.g. Wolfman WR2 1.25 SB, RazoRock Lupo 95, early Mk2 Fatip OC, etc) occasionally, just to remind me how great the Flat Bottom Tech is.
Please accept my apologies for TMI... but as we say at the BOSC, "If a job's worth doing, it's worth overdoing."