This is a powerful tool that can help you improve performance of your landing pages - with a fairly clear interface.
Good selection of integrations (also easy to set up) to leading Marketing Automation platforms for sending over the data to. Really good support that provides quick and helpful responses.
I love how setting up tests and traffic allotment is. I am also a huge fan of the ability to make simple graphic changes to the landing pages - it is VERY easy.
Not having a 'Copy & Paste' function, nor an 'Undo' button. When I train partners within our organization, this is the biggest initial complaint.
We struggled with landing page development timing by going through our internal IT team.
Sometimes, features that I use daily may disappear without notice. Whether they're gone forever or simply moved around to somewhere else is usually unclear.