5 stars: Simply the best browser out there.... Has all the features plus one cool feature in particular other browsers don't have or don't do it properly (even though they claim to): Wordwrap! Zooming text and re-aligning that text automatically to the width of the screen, so that you don't have to scroll left and right on every single line of an article, especially long articles... Which is annoying and distracting on other browsers. 😀👍
3 stars: I have opera on 5 devices (2 phones, 2 tablets, 1 pc). I like using it, but the bookmark sync got messed up. I gave it a few days, but the android devices wouldn't fully sync with the PC (where I made the changes). I signed out of my account on the androids and cleared the data. I haven't been able to sign back in. I can't get past the stupid capchas. I'm using Chrome now. Oh well.
3 stars: No tab groups. It can't keep track of which tabs I've opened or closed unless the keep the app open for, like, a couple of hours after the change. As far as I can tell, it doesn't have cross platform browsing but I haven't gone digging deep into the settings because this should be a surface level feature.
2 stars: I've been using Opera for years on my various laptops (Mac/PC), so I've given it a try on mobile. It works great, loads fast. I'd love to see tabbed groups, a very useful Chrome setting when doing research. Unfortunately, I'm bombarded by ads. I was not expecting this. Instead of having multiple Opera versions...maybe focus...