This was my first computer and that was 1982. The Commodore was too expensive for me (I bought it last year, never's too late), although we used it at school.
Almost all my fellows had an Spectrum 48k. That was very cool... we were sharing games, just copying with a casette. Knight Lore was an awesome game and I think never went to Commodore.
I remember there's somewhere a great discussion that some tv or radio organized trying to know what was better if the ZX48 or the C64, and the Spectrum seemed to get winner in general (at least about programing I think can be understood). It seemed for example that to make a circle on the C64 has a lot more work than in an Spectrum (with a command for that). Music and graphic/colors were better in the C=
But I will never forget the first time I played One on One on the C64. It was incredible for that time... nothing to do in the Spectrum.
Now I've got an Spectrum emulator which I like to play on the Amiga.