Mozilla is definitely one of the best browser in market. The browsing is very fast and the design is very user friendly with useful tools and options available at disposal.
One can download and install add ons like downthemall to to download videos from websites like youtube or dailymotion very easily. The browser rarely crash even after left it opened and hibernating the computer.Only one problem I encountered is that it sometime hangs for few seconds just after opening it otherwise it is good to go.