I like best how quick it was for us to be able to make changes or see results in such little time - almost immediately! There have been some glitches along with all new products/sites we've launched but their support team has always responded quickly when needed. Sometimes there are too many features (i.e., data gathering) which can slow things down if you're not careful about your selections of what should stay vs. go away from the platform after first launch. We also haven't found any other tools quite as easy-to-use than this one so far. Try them out before deciding whether they fit into your workflow well enough. With our previous toolset it took days to get test questions set up each week; now it only takes minutes with trial run plus weekly reporting afterwards.