Softaculous would have the win the polls in my opinion. They're selection of scripts are ever-lasting and the fact that the UI is excellent makes it easier on my newbie clients.
Softaculous is the best. It has lots of scripts in its database than any others.I'm using it in my 2 servers on diretadmin and cpanel.
Its work great..
I have not looked into softaculous but from all the positive reviews I am going to have to look into this software.
Fantstico however brings more clients in still I think. All hosts the 'big' hosts still use Fantastico and is still widely marketed. So when a user visits your site they usally know right away what Fantastico is sicne every other host has it. While Softaculous is never and not as well know.
More isn't always better My vote would go towards Installatron as it has a better GUI and overall functions better imho. Plus they roll out updates pretty quickly.
At the moment we use Installatron, though there seems to have been a lot of positive reviews for Softaculous recently so it might be time to take a peek
We used to use Fantastico a while back but they are (or at least WERE) extremely slow in releasing updates which was what prompted us to move to Installatron.
I have used all 3, and happen to mainly use Installatron. However, Softaculous seems to be offering the most and potential customers have realised this and so I believe are starting to look for hosting with softaculous (rather than Installatron or Fantastico) more and more often now.
As it provides the most scripts and fastest/easiest installations, I'd probably say Softaculous is the winner out of those 3 these days.