I think the same applies to almost anything. In archery, for example....

I hit a point with my first bow where I couldn't tune it to be any better than it was. And *I* was better than the bow was, so it was frustrating. So I traded up to a better bow, which I could tune to my (then) more exacting standards. But then when I decided I needed an even better bow, my archery didn't improve concomitantly. (actually, it went downhill, where it has stayed, but that was another matter)