I remember my old Atari 400 loaded programs using the 410 cassette recorder. I do wonder how much a record could hold compared to a cassette, and given just we

I remember my old Atari 400 loaded programs using the 410 cassette recorder. I do wonder how much a record could hold compared to a cassette, and given just wear, which would last longer? Also, didn't some magazine from the era ship a plastic record for some system? I vaguely remember it, but I could just be imagining things. It was actually square with the 45 size record printed in it.