I'm going to go out on a limb here and say that this is the best Joomla extension in this directory. They have the most dedicated team, most professional organization, fastest evolving codebase, fastest turnaround for support, and above all most rock-solid extension I have ever seen on an extension of this scope. You can write a flawless extension that does little or nothing but this is a flawless extension that does everything: like a magician it juggles all of the big community packages and does so with ease and a top-tier GUI. To make it even better, every single piece of code I've seen reads like poetry. All of this sounds like the makings of a top-quality business but that's where JFusion transcends: it's 100% free. Marius and his crew are on this nobody else in the Joomla Bridge game, and if you haven't tried JFusion you've missed out.