Vivaldi's interface has all of the main elements of the Chrome interface, so it is relatively easy to transition from Chrome. one key feature that sets Vivaldi apart is the side panel. This panel opens on the side of the browser and contains various widgets, like bookmarks, browsing history, and integrated browser features including a translator, notes app, and email client. You can also add your own by using the plus icon at the bottom and entering the link of the site you want to add. 

On the new tab page, you see speed dials (aka. shortcuts), a search bar, and a count of all the trackers Vivaldi has blocked. The panel is on the side, and the tab bar is above it (though you can configure it to be on the bottom or either of the sides). The tab bar is similar to Chrome, but it is hiding some very interesting features. You can configure it to either squish tabs like Chrome when it runs out of room, or allow them to scroll. Vivaldi has also put its own spin on tab groups, using layered tab stacks (which is another tab bar above the main one) instead, though you can also use a more Chrome-like 'accordion' layout. 

When it comes to features, Vivaldi beats basically any browser you stack it against. In addition to the integrated features I mentioned earlier, it has a calendar, to-do list, contacts, a reading list, a QR code generator, what is arguably the best no-internet game of any browser, split-screen tabs, and of course, a tracker blocker. One feature that I have found really useful is the split-screen tab viewer.  When taking notes on an article or video, it always annoys me that I have to open two browser windows, drag them next to each other, and size them to fit the screen. However, on Vivaldi, you can just tile the tabs without ever leaving the window.

In terms of privacy, Vivaldi is a very good browser. It has one of the strongest privacy policies I have ever seen. While its tracker blocker isn't quite as good as Brave, in most cases they are pretty similar. Vivaldi blocked 1 item on google.com, to Brave's 15, while on weather.com, Vivaldi blocked 21 to Brave's 10. Based on my testing, the discrepancy seems to be caused mainly by Brave's aggressive blocking of first-party trackers, while Vivaldi blocks mainly third-party trackers, although it does still block first-party ads and ad-trackers. Its protections are a bit worse in the fingerprinting department. When tested with Panopticlick, it was found to have a 'nearly-unique' fingerprint. However, it still received 'strong privacy protection' overall. Update 07/30/23: While Vivaldi has a unique fingerprint, its fingerprint changes every session, and even website-to-website, giving it the best anti-fingerprinting measures of any browser I have tested.

All in all, Vivaldi is a very good browser. While it is not quite as private as Brave, its powerful features and still good privacy protections make it a good choice for those looking for lots of functionality. Vivaldi is also incredibly customizable, allowing you to choose how many features you want, make a custom theme, or even move the tab bar around, making it one of the most versatile browsers on the market.