I'm wondering if Gillette made any "aggressive" non-adjustable razors. I've got a pre-war Tech and 49 and 61 Superspeeds, all pretty mild. Is there anything out there that is easy to find and won't cost an arm or leg?
An Old Type or a New. Old Types are usually inexpensive if they don't come in a nice set. News ought to be dirt cheap in an antique store, and not much more expensive than that if you buy them online with a case and/or paraphernalia.
There's a whole philosophical argument to be had here about whether the Old and the New are truly aggressive, or merely more efficient than safety bar razors. The upshot is that these are both more aggressive and, in my experience, WAY more efficient than any Tech or Super Speed you'll ever meet.