The UI looks great, it's easy to use with little training needed (although there are some good tutorials out already), I love how fast everything loads up compared to other tools we've used in similar fields so far - even when our servers were under high load or slow network connections! We're still early days but have seen very positive results for us as marketers from using this tool alone over just having another person look at ads/landing pages manually each week / month etc., which was time consuming work before now taking 10 minutes per day instead of 2 hours-plus daily.