@newworldman I've always tested Vivaldi, but there always were some unexpected quirks. In my experience it doesn't run fine with WhatsApp in the panel, which works much more smooth in Opera.
Also, it happens to do not foreseen things in Instagram. Recently, I was logged out of my account, as I wanted to open my Threads account.
Otherwise a great browser, but it tends to make things to complicated in my opinion. And it's not willing to implement something like Aria, as they take a stand against AI.
For me it's Opera 1, Chrome 2, Safari 3 (on my Mac, but 2 on iPhone).