I would love a Kadet... but too expensive for me. I don't want the conversion.
Having a closer look at th RIA... I like it a lot.
As far as Zamak, used properly can be pretty tough... though not as tough as good 70 series aluminum. Hi-point uses it in their guns... and while cheap, ugly, heavy, and with bad triggers... they tend to be accurate, reliable and tough. I have seen some torture test videos that should have destroyed it, yet it kept going.
But If I can get a better quality pistol in aluminum or steel, for not much more, then why not.
BTW... Hickok45 is a good one to listen to... Go to his playlists and look at the "basics" and "gun safety" playlists of videos.