The Commodore 64 came out only two years' after the VIC-20 and while the looks were similar the C64 was a major improvement. My mate down the road had a C64 (the breadbin design) while I had my trusty old 48k speccy. My heart was, and still is, with the Spectrum but the C64 certainly was a flashy piece of kit in its day. No envy here. None. Honestly. You can read more about the C64 here.