I'm resigned to the likelihood that AVAST and/or Mozzila are going to force me to mess up my clean, customised browser GUI at some point down the line but I'm going to scream against the wind and put that off for as long as possible.
When you get there give Pale Moon a try.
I'm very pleased with this very robust and very highly configurable browser with literally the best of support.
Pale Moon is one of the few browsers that can boast having all of the following: Bookmark management, Download management, Password managing, Form managing, Spell checking, Search Engine Toolbar, Per-Site Security Configuration, Privacy Mode, Auto-Updater, Tabbed browsing, Pop-up blocking, Incremental Search, Ad-filtering, Page zooming, Full text search of history, Content Model Dialogues that with all of this also passes all 3 Acid Scores (The Acid tests are online test suites to determine aspects of standards compliance, to expose web page rendering flaws, and to rate the performance of browsers. Upon each test's release, they are designed so that no existing browser can pass without further development. In order for a browser to pass any Acid test, the latest public release of the browser (not an alpha, beta, release candidate, or other version under development or testing procedures) must meet the requirements).