That seems like a matter of taste. We switched from Altium to KiCad and I very much prefer it. We don't do any RF stuff, so there might be things that don't quite work in KiCad, but for what we do - power electronics - it works perfectly well.
I wish they kicad footprints were easier to find/modify/maintain.
I modified some its hard to reuse them in other designs. They get saved in places with lots of extra files and I'm not sure how to merge with other designs.
That seems like a matter of taste. We switched from Altium to KiCad and I very much prefer it. We don't do any RF stuff, so there might be things that don't quite work in KiCad, but for what we do - power electronics - it works perfectly well.