Nice web browser is key for good internet experience and mozzila firefox seems to doing it.Download speed is good And surfing is also good .Experience is seemless and Upgarde comes on time they are needed but it is not best in the market as we have UC Web entered the market it has features like adblock, fast download and resource downloader pre installed.
Thus it is good but not the best browser.Today the features of mozilla firefox are not enough for a browser.