These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Awesome Music: The SID chip is made of pure concentrated awesome. It only has 3 voices because if it had four it would have exploded from awesome overload. And some awesome composers managed to squeeze a fourth voice out of it anyway! MULE and Skate or Die are some examples above; Taito's ports of some of their arcade games (such as Arkanoid II and Operation Wolf) are others, where the arcade music was replaced by elaborate synthpop compositions.
The SID chip is so awesome that the metal band Machinae Supremacy relies on it for their sound.
Fanon Discontinuity: The C64 had successors other than the C128 — the TED series, specifically the Plus/4 and the C16. Although the Plus/4 sold somewhat well in Europe, its graphics and sound capabilities were a pale shadow of the C64's and ultimately rendered it a historical footnote.
The C128 suffered from its own excellence: although it was superior in several ways, it boasted something like 99.6% backwards compatibility with the C64, so software companies saw no point in producing software for the C128's advanced features and leaving behind the C64 market. Manufacturers hadn't yet gotten the hang of planned obsolescence. The 128 supported CP/M, but it was well past its prime in 1985. The Amiga also came out not much longer after the 128, so computer enthusiasts flocked to that platform instead.
Germans Love David Hasselhoff: The machine was eclipsed by PCs and, to a lesser extent, Macs in the computer market and by the Nintendo Entertainment System on the gaming front in America during the latter half of the '80s but was still hugely popular overseas, only being discontinued when Commodore itself imploded in 1994.