Er, we forgot the Apple ][+! The original Apple ][ and the later Apple //e were distinctly different from the -plus. This computer was a work of art unequalled today, mostly because of the impossibility these days of selling a computer with its entire innards (complete schematic of the mainboard, BIOS listout and full memory map/ROM map) in a 4x8 ringbound pamphlet called Inside the Apple ][. Wow. I learned to hack assembly on mine over one Cheetos and Coke-laden week in junior high in order to write a one-bit audio digitizer using the RCA-jack cassette data port. My only source of info was this one book. Worked, too.

Thanks much to xunker for the edification on proper Apple nomenclature!