Only issue im having with Opera on mobile right now is that its adblocker doesnt really work that well (compared to AdGuard on my ios atleast)
It still keeps on allowing the very annoying click pop-up ads to exist so it would be good if there is an alternative for this browser with a much better adblocker on Android.
I use Opera, but I don’t trust their VPN.
Opera is owned by a Chinese consortium, so privacy could be a concern. Using their VPN won’t get you any better security, if privacy is a real issue.
I wish I didn’t need to use Opera, but they have the only workable pinch-and-zoom auto-text reflow that I have found on a mobile browser. Firefox did with an addin, until they moved to the new Firefox for Mobile. Until somebody else comes up with a good auto-text reflow implementation, I’m stuck on Opera.
Edge on iPhone and Android.
Give Brave browser a try. In my experience it’s the best browser on Android. Although I use Chrome because I don’t like the Desktop version of Brave, and I like to use the same browser across all my devices, makes it easier to access and manage bookmarks.
Yandex + Adguard + Adguard-VPN.
brave for every device
Definitely Brave. It blocks some YouTube ads and allows you to listen to music with the screen turned off. Its probably the most useful considering you can also open duck duck go in it to watch 
movies
Bromite, iceraven and firefox focus are one of the best browser.
I use mainly Iceraven (I’ve been using it for a week, before that it was Firefox) and Vivaldi, as these are my two desktop browsers as well.
Iceraven/Firefox, you can install uBlock Origin (the best adblocker imo) and a VPN (at least on Iceraven, which is a fork of Firefox that includes a ton of extensions ; I think you also have access to a VPN via an extension on Firefox, just check that out)
Vivaldi has an adblocker out of the box, but it’s detected by some sites. Also, there is no extension support, so you’d have to use something else for your VPN (like an external app)
Ice Raven as Fenix is the only base that has proper text scaling and full uBO support and Ice Raven unlocks about:config, adds pull to refresh and userstyles and userscripts extensions that are still not enabled by Mozilla in official builds
also, there is no VPN in not-Opera, proxy service is proxy service and has nothing to do with VPN
Firefox with the ublock origin extension. Works great for Android and iOS.
I use Edge because I use Edge in desktop so I can access my data. But overall I don’t like mobile version of Edge. It lacks so many features compared Chrome mobile. FireFox is also good.
Fennec or Mull on Fdriod is good to
Samsung Internet with Adguard Content Blocker addon/extension
IceRaven, because it fixes two of the biggest glaring omissions of Firefox Mobile (extension support and about:config access), and is fully Firefox syncable.
The opera VPN does very little, you can’t even really call it a VPN. Vivaldi and a decent free one I would say is a better idea. I have used Windscribe and had a good experience but it’s had it’s fair amount of criticisms as well.
I use Vivaldi because that’s what I use on desktop. It has ad block built-in of course also and translation… in my opinion brave is over hyped
I’m trialing Firefox focus atm for more private browsing but just out of curiosity because privacy aint THAT important to me most of the time. Also use Opera, Chrome, (Normal) Firefox and Samsungs inbuilt one. Use lots of addons in both chrome and Opera but leave firefox unmodded for when addons screw pages up. But yeah doubt there is a ‘best’ for many people, other than addblocking stuff.
Along with Firefox, Samsung internet is a great android browser. It has a video assistant feature which is great for those streaming sites that dont have and app equivalent.
Yandex + Adguard + Adguard VPN.