I've been a long time supporter of Opera, ever since they stopped making it a pay for product. It used to be an independent product and was great, fast, low memory usage, and with lots of features like gestures, ad block and other tools all natively built by default. But then they switched to the Chromium engine and tried to emulate Chrome too closely and it hasn't been the same since.
It's still a good browser, but it's app market is a bit lacking.