I've tried them all and Chrome is the best
I hate to say it, but Chrome really is the best.
I was a daily Safari user for years and really loved it until MacOS 26 completely ruined the experience for me. Vertical tab groups would automatically expand when switching, important websites like Salesforce and Outlook would randomly log me out. I loved the tab group sync between devices, but because of how broken Safari was after 26 update, I searched for a replacement.
I tried them all--Firefox, Brave, SigmaOS, Opera, Helium, Orion, Vivaldi, Arc, Dia, Edge, ChatGPT Atlas, and some lesser known ones like Shift. I would say that my second favorite is Vivaldi for it's customization, but it's lack of AI integration killed it for me. A close third is Brave for its privacy.
The more I used Chrome, the more I realized that it's the best out there. Gemini's integration is really smooth and it presents info in a good format. Chrome does vertical tabs the best in my opinion. I use tab groups extensively, and having the ability to pull up a tab group on my iPhone and add or delete a tab in real time sealed the deal for me.
So, after years of not using Chrome, I'm back. Sure, I'm losing some privacy, but I feel the trade off is worth it given the user experience.