I like that it is easy to use with no coding required! The customer support team are fantastic - they always respond quickly & help you out when needed. It can be hard at times for us as marketers in our day-to-day work to keep up to date with all of their features but once we do get around them there's never anything negative said about funnel envy by any member of staff or other users from previous projects. We have been able to create multiple funnels which has helped grow traffic into lead generating pages within minutes via automation rather than having to wait days/weeks for Google Adwords to show results. They offer great value compared to competitors such as KWFinder etc., however this isn't something I would say was 'unique' per se (it seems quite similar). Our main benefit so far has really just come down to speed, ease of implementation and being able to track conversions easily without.