Outplay is simple to implement and powerful enough to let you automate tons of outbound processes...SMS, email, dials - when I was using this, I was able to closely replicate automations I had running in HubSpot, which is pretty impressive. We used this every day, easily integrated it with our processes and their customer support was always top notch.
What I most like about Outplay is its ease of use. At our company, we are 20 AEs and SDRs using it for sales engagement and outreach. We all work collaboratively and compare the details.