With Unbounce, it was easy creating landing pages, who perform best on mobiles. It has a great template gallery, that you can customize as you wish.
Using their amazing features you can create attractive and converting landingpages that will bring more traffic to your lead/offer.
All of this is extremely easy to do within the interface. I also like that integrating Unbounce with software like Mailchimp/Constant Contact is quick and easy.
The lack of integration with Pardot. Because there wasn't to utilize Pardot forms, we struggled to utilize this product.
Some customizations were difficult to do and going back and forth between the desktop version and the mobile version can be a pain.
Simple expected things stop working. Overall is a mediocre tool that will drive you crazy.