Also the initial board stackup and differential pairs where setup using Allegro's field solver as Altium's results (which likely use formulas) for the differential pairs where way off.
Altium uses a field solver.
And I don’t see how KiCad will displace Altium until it fills in the gaps on very basic missing features, like the ability to edit more than a single object at a time. (The current workaround of batch-editing files in a text editor is laughable.) KiCad is impressive in many ways, and you can absolutely produce top-quality output with it, but Altium supports you far more in doing so.
100% agreed.
I've used Kicad with satisfaction on several occassions, but it were handpicked designs which wouldn't go beyond QFP-100 or so, on small PCBs. The productivity tools just aren't there yet. The GUI's still feel clunky (ever noticed how non-intuitive the footprint picker for a complete SCH looks?), and simply lacking for grouping, selecting, filtering and mass editting tools. "Scripting" is not the solution for this. I shouldn't need to write a script to change the value/footprint of 5 caps "in bulk" in my design.
Now I must admit that KiCad can probably be fixed relatively easy for that, its not doing a whole things wrong per-se, rather it's not doing them
yet. In contrast, Altium has grown out to be a beast with half a dozen ways to accomplish the same thing.. or 3 different ways to open the same GUI panels. I also don't like their newer UI design where all the panels fold in the sides and are arranged vertically. Some of the old panels had a great overview and information density.
It's all horrondously complex, and speaking of poor UI design, Altium can also get some rewards!
But.. its all nothing compared to Eagle or whatever it is now called. I started using it in 2010 as an upgrade to Multisim we used in school.. but man, looking back, what a piece of trash that was.