Best of the big tab add-ons Rated 5 out of 5 stars

This is without a doubt the best of all the Tab Mix type add-ons. It does just about everything you could possibly want to do with tabs, and it plays nicely with all the add-ons that provide the few functions that it doesn't. It's not buggy, it doesn't slow Firefox down to a crawl, and it doesn't conflict with other add-ons. Be sure you look through the (extremely detailed!) options carefully: there are a number of unexpected bonus functions in there, and it's easy to miss them if you're not paying attention.

The only real criticism I have about this extension is that its multi-tag functions don't seem to show quite the same attention to detail as the rest. For example, the mechanism for selecting multiple tags is a bit awkward and confusing, and selected tags are not marked very clearly -- with any of the colored tags add-ons enabled, in fact, it's impossible to distinguish selected from non-selected tags at all. For this reason, I've kept the Multiple Tag Handler add-on enabled, in spite of the duplication of functions. In comments left on other reviews, the creator has hastened to point out that this add-on works well with Multiple Tag Handler, which makes me wonder whether he might not have done better to leave those functions out of this add-on altogether. As things stand, they seem, if not exactly haIf-hearted, then notably less perfectionist than the rest of the program.

The Menu Editor add-on is very useful if you have both these add-ons enabled; without it or some other way of paring the menus down, the tab context menu becomes very long and unwieldy indeed, with an astonishing number of duplications.

This review is for a previous version of the add-on (0.9.9.9.1). 

Thanks for your comment and criticism.
The selected tabs highlighting has been improved in version 1.0pre8. You may get it at: https://addons.mozilla.org/firefox/addon/59961/versions/. But I'm not sure what you mean by "awkward and confusing mechanism for selecting multiple tabs". In the Default settings, you may use Ctrl-click, Shift-click or Ctrl-Shift-click to select tabs. It's quite similar to Windows Explorer operations.