I use Safari and Coast by Opera a lot, depending on whether I'm on WiFi or LTE.
Safari is great on WiFi but if you're heavy on browsing like me, you find that Safari chows a lot of data, so when on LTE I use Coast as it compresses data, it's also incredibly lite on battery, I once had my iPad 4 last 3 days of on and off heavy browsing with Coast, it will sit at 100% battery for a good hour and a half sometimes when using Coast.