A very good form building extension that works well with Joomla and easysocial

Hi all, I am looking for a very good form builder extension for Joomla 3.x I do not mind it being premium of course. Basically I need something that can have multiple pages in it and also allow for conditional logic etc.

I am also looking into maybe a partial capture element whereby the user can come back to the form and complete it at a later stage.

I have a form to build for a complex enough business competition so I need to build a form that has alot of different features working at once and some of the free form builder extensions are really not up to the task so I am on the search for something robust and reliable here that can do some of the things outlined.

I thought this a good place to ask as there are some very helpful people with great knowledge of Joomla here. Thanks in advance for your time here. Appreciate every bit of feedback thanks