swMenuFree is just such a rare find.
Within about 30 minutes of installing it I had a horizontal menu that was workable. After about an hour I had tidied it up enough to put my site live again. Another hour, or so, of primping and preening and my old vertical menu had been replaced with a very tidy horizontal menu that should fit my requirements for another six months at least. After that I know that if I need to I'll be able to upgrade to swMenuPro, with confidence, and not have to worry about starting from scratch again.
Even better - I did NOT need to fiddle around in php and css files so I know that if I need to update anything I will not to re-apply any php/css changes.
If only all Joomla extensions were this good. Well done Sean!