Elements Unlimited has served me well over the last 2 years and I have installed certain plugins on many of my websites. Unfortunately, Elements is unable to guarantee that a plugin will still be available today, next week or next month as the Author can remove the plugin anytime from Elements as described here:
Nor automatic updates are available for most of the element WordPress plugins and had to discover many times an update was available because the plugin stopped working.
I will return once Envato come-up with a better, reliable system where we do not need to worry about that plugin can be removed/deleted from Elements any time.
Please note: Elements is fantastic platform and my complaint is only for WordPress.