I'm partial to Final Cut Pro these days. Some folks find it confusing compared to Premiere, but having used both for hundreds of hours, I feel like FCP offers a faster workflow. I also think FCP has a smoother learning curve, FWIW.
My favourite timeline-based editing tool, though, is Ableton Live. It's for music, not video, but that difference is pretty insignificant once you get right to the heart of it. If you're looking for the holy grail of powerful but simple timeline-based editing tools, that's probably the one to beat.
I'm also partial to the f-curve editors you find in animation packages like Maya, 3DS Max, Modo, etc. But those are probably the most complex tools in this category.
Descript is on the opposite end of the spectrum. It's a fantastic tool for folks who don't know how, can't afford, or can't be bothered to use a professional tool. And much like other tools focused on making hard things easy, the result is actually a real joy to use for things that would otherwise be frustrating. Some professional podcasters I follow use Descript as their rough-draft edit tool, before going in to Logic or Ferrite to do a more precise edit.
So like anything, there is no universal "best", not for such a broad category as "video editor". There are plenty of "favourite", but that's going to vary depending on who you ask. But feel free to say more about what sort of UX you're interested in, and I might be able to point to specific details of these (or other — I've been doing video/audio/3d since the mid 90s) tools.