This is an amended review. My first review was based on their late decision to only provide webhooks to tier3 and above. They have since changed their minds on that, thankfully. It's a shame they did it in the first place though, and it does cause concern. I nearly took a taco off for it but my experience the last 24 hours has changed my mind.

I've implemented it on a site that uses Divi. There was a problem though and the Divi builder wouldn't load to customise the pages. Tech support were fantastic. They tried to fix it via access to my dev site, but when that didn't work they asked for a staging site they could work on. It seems it was a hard problem to solve, but I know the spent many hours on it and the next day (today) they have fixed it.

Support was both fast, polite, detailed and - what matters most - solved the problem.
I was tempted to refund this, but the speed of development, the high level of support, and the confirmation that all tiers will get all future updates means I will keep it.
It's not yet WooFunnels, but they are on their tails, that's for sure. Seems like a solid investment.