What actually made you switch circular saw brands (or battery platforms)?

Battery ecosystem seems to be the single biggest factor pulling people toward or away from certain circular saws, more than raw power specs. Curious if that's matched people's real experience — did you ever eat the cost of switching platforms because one saw was just that much better?

Also curious how much weight/balance mattered once you were a few hours into a project vs. how it felt in a 30-second store test.

Here's a comparison of a few current circular saw options if anyone wants a refresher: https://powertoolslab.com/best-power-circular-saws/