Firefox - fur coat and no nickers.
Not so long ago No Script stopped working without warning, when Firefox was 'upgraded'. From next month Mozilla have decided to block more addons at short notice. I've lost count of the number of addons that have been blocked overnight, the majority of which have never been replaced. Practically every upgrade has cost usability, and list of bugs that have never been fixed gets longer and longer.
Mozilla boasts about the addons available, the way things are going, there won't be any, which will solve the problem of finding any that work on their site.