@riskable, the best browser is the one which suites best your needs is correct. But yes, you can add "if it is other than Chrome, EDGE or current Opera.
What I never do is using Google, Bing or Yahoo as search engine, because they are direct Spyware, logging your activity and history, which apart of a security risk (they sell your data to advertising companies), rest privacy and you run with their use in a filter bubble.
The speed differences of modern browsers are certainly irrelevant.