I can't speak anything about the web-rendering part, which seemed at very least okay, in pair with firefox and chrome, if not somewhat better, sometimes. Even there the GUI alone could give it an edge sometimes as it had a button where you could choose to display/download no image at all, only display already cached images, or operate normally. Other browsers may even have that function, but it's hidden deeper in a less customizable GUI.
And customization was so easy and powerfull....
