Someone mentioned Zen on the endeavor forums the other day. I’ve switched to Zen Optimized as my daily driver and I’ve been pleasantly surprised by how much I like it. I’m not a keyboard shortcuts kinda guy but you do need to learn the tab manipulation shortcuts or it’ll drain your sanity right clicking on the icons to close tabs.
The coldest in my memory was -42C, I remember getting into my boat of a Cadillac and the soft leather seats being as hard as concrete.