Russell Allert said
1 year, 4 months ago: @fredericgonzalo Hi Frederic
It offers way more before you have to pay (unlimited page-tabs if you have under 2,000 fans)
It displays beautifully
It is easy to use
They are a great start-up
They are cheaper
They seem to offer more in the way of providing competition tabs and the database behind it.
For a great example I am using ShortStack on one of my clients FB page – you can have a look at them here.
Hope that helps, Frederic! 
Russell