I've been using Elegant Themes since 2013, and love Divi! Since the front end was added, Divi is slower, yet I am overall satisfied. Regarding ET's support, once it is provided it's very good. In the earlier days, ET provided swift support response. It felt more personalized then too. Now-a-days, support takes a day or so instead of hours to get a response, however the actual support that was provided was quite helpful, and the support staff are capable and knowledgeable.