I assume you mean Vivaldi.
I don't use it as my primary browser (that honor goes to Firefox), but I do keep it around as a "backup" browser when I want to visit something with a different browser, eliminate potential cache issues, etc. It has a very responsive UI, and it uses the Blink rendering engine and so renders things more or less like Chrome and is thus compatible with nearly any modern website. There are some neat UI features (and some annoying ones: I usually middle-click tabs to close, but if you go just a bit too far down and hit the separator bar, you'll turn on large tabs with previews), so if any of them appeal to you, I'd say go for it. You may also like it if you were an old-time Opera user, to whom this browser was really made to appeal.
Doesn't hurt to try. You'll always have Safari or your browser of choice to fall back on or switch back to if you prefer.