UC Browser is an old player in the browsing competition. Native ad-blocker, night mode, image compression, smart download manager, video pop-out and video downloader make UC browser packed with super powers.
The privacy and security of UC browser is not reported to be rock solid. But there are no issues or real complaints other than rumors. If you are very, very conscious about privacy and security, consider the credibility of UC browser on other platforms (mobile etc.). Its fame is enough to ensure its claims.
The menu looks like basic Chromium menu but simplified to make things easier. For instance, there is an option to check for latest version of UC browser right in the menu pane. While in Chrome, there is no direct option to check for update until automatic updated version is installed or you have to navigate to About section of web browser.
UC browser has shortcut key (Ctrl+T) to open Tab viewer. This makes multitasking even more easier after tabbed browsing.
If we compare the browsing speed of UC to Chrome and Firefox, it is nearly same. However, browsing on UC is not smooth. That is why browsing on UC browser for a long time might feel you like travelling in a local bus or a cheap government train. Nice but uncomfortable.
A lot of people complain about outdated version. That is laziness (sort of) or lack of interest of developers in desktop version of UC browser. The mobile version is regularly updated for all variants (UC browser, UC mini etc.). Too slow updates make UC less trustworthy.
One of the most favorite feature of UC browser is its video downloader. If you are fond of downloading videos from YouTube, DailyMotion, Vimeo or any other video sharing site and do not have IDM (Internet Download Manager) then UC browser is best alternative to IDM. You can download as many videos as you want without registration of any paid software. It is fast and free.