I don't really understand all the hate Zamak gets. Yes, your head may snap off (although it seems much more common in some razors than others, which is more indicative of people who just aren't as good at engineering around the metal they're using), but it's not really going to change the quality of the shave given they're all plated in nickel or chrome anyway. And if you drop your vintage Gillette, it may not break but you could easily end up with a wonky blade gap or uneven doors for TTOs. Corrosion after plating loss could be an issue, but this will normally take quite a few years as long as you take reasonably good care of the razor.
Don't forget that some of the most beloved modern heads, like the R41, are Zamak. It's not going to change the "feel" of a razor, that is the fault of simple poor engineering.
Don't forget that some of the most beloved modern heads, like the R41, are Zamak. It's not going to change the "feel" of a razor, that is the fault of simple poor engineering.