If I were you, I would take the classic B/W game that you like the most (WH20 or TZ based on your ratings?) and go have HEP or or Brian Kelly or GAP (black & white TZ?) or some other badass restorer make me the nicest one possibly created. You know they aren't going to remake those titles, and you also know that you love to play them. Drop $10K on a WH20 or $15K on a TZ that won't ever be replicated. The other grail stuff isn't going to be fun to play. Save the money and buy a Kingpin remake with the remainder.

A brassed, cleared, super duper nice TOTAN is about as pretty a piece of art that exists in the entire world, IMO.

Well, then we can rule out JJP games and almost all the rare stuff.