The project was for me one the most difficult to complete in my career. The details, custom header, grids, layouts, different mobile layouts than the desctop view... - without the Ultra theme and the builder I wouldn't do it!
Themify ULTRA gives me complete control and sets no limitations when building a functional, clean and professional website. Themify's builder tools are second to none - I can't see myself ever using another theme provider. In short, Themify gives me everything I need, and more.
I've been using WordPress for a long time, and the Themify Builder is one of the best I've seen. It's feature rich and the WYSIWYG editor is extremely intuitive. I've also had no conflicts with other WordPress plugins, which made going live a pleasant and frictionless experience. Customer service is very responsive and helpful too. I plan to use Themify for all my sites going forward.