Same for me, it will always be "the digger song". It was one of the three games I initially had, pirated, like everything except for that mouse driver disc that I dared not touch because it had a printed label (how can you trust a disk without a hand-written label, so confusing!). I wonder if I'd love the Hot Butter version even remotely as much as I do if I had never played digger?
Surprisingly, despite having been a bit of a synth nerd for a few years I never consciously heard that Gershon King version. Hearing it for the first time now it was a bit disappointing compared to the Hot Butter, quite a few weak parts that I feel tempted to call beginner mistakes in terms of arrangement/mix. But then they were all beginners at the time, adds an interesting "relatable" angle to the whole thing. And then in the finale, the perhaps (or seemingly!) naive "maximalism" just works, totally blown away!