At work, it's IE:FF:Chrome 70:20:10 - but that's only because CorpIT get shirty if you try and use anything other than IE (which if you're running a Linux desktop is ... "interesting").
At home, because I need cross-platform ability it's Chrome and Firefox. Chrome usually, but a NoScript/ABP'd/etc Firefox for any online banking etc. I keep my Windows-7 resident copy of IE up to date but, to me at least, it feels unwieldy and slow.
Although it's not "desktop" - so off-topic - on mobile, (phone and tablet), Chrome (again) plus Firefox and Opera. For me, Opera on a tablet just feels better than Firefox.
Honestly, I don't think that there is a "best" desktop browser, merely one that suits any particular person better than the alternatives.