I do not know. After several days using edge to give it a fair shot, I have it as my default for now. It is very fast, and I have had no issues with the things I normally use a browser for, at least not yet.
Before this I used Chrome on my work pc and IE on my tablet. I have tried firefox before but was never all that impressed, or enough to swap to it anyway.
They all basically do the same thing. I originally switched to Firefox about 10 years ago because of all the reports about internet explorer not being very secure at the time. Internet Explorer was also the default browser and used by the vast majority of people on the internet back then so malware was designed specifically to attack that browser.
When Chrome came out I never really saw a need to switch because Firefox was working fine for me. Again, all of these browsers basically do the same thing and most add-ons are available for both Firefox and Chrome. I also figure I give enough of my information to Google by using Gmail as my personal email for the last 10 years or so.
Chrome, or any other new browser, would have to be markedly better than Firefox to cause me to switch. It's one of those if it aint broken why fix it scenarios. Admittedly, I don't have much experience with Chrome but they seem very similar from what I have seen. I do have Chrome installed on my desktop for the rare instance where something isn't working correctly in Firefox.