My favorite part of Wistia is how easy it is to integrate, both into your website and with marketing automation platforms such as Pardot. I also LOVE the resources they're always sharing that allow those inexperienced with using video to share great content on a low budget. Their customer service has always been super-responsive and friendly, and their company culture and internal videos make me happy and give me hope that if they sometimes struggle to get it right (given their outtakes), it's ok that the rest of us struggle sometimes too.
I know they're continuing to work on it, but I wish there was even more integration with Pardot so that we could automate and segment more directly based on interactions with video. However, the reporting that allows us to see how people are interacting is still really valuable.
Do your research, especially with regard to how Wistia and/or competitors compare to YouTube and which content works better on one platform (Wistia) vs YouTube vs both. Moz has some good content on this topic. Also, review Wistia's own resources to see if they deliver the kind of support you need. Finally, be sure to get a demo and have them show you what's possible if you're trying to link Wistia to a marketing automation platform and/or CRM. If you're comparing Wistia with other vendors, make sure you make them walk you through the connection and show you exactly what you'll be able to see and do both in the CRM and/or directly in the marketing automation platform.
We wanted an easy way to display video, from the costly professionally produced content to our internal videos such as client testimonials, and we wanted evidence about whether video was working: bringing us more traffic, promoting engagement, and nudging prospects closer to that sales conversation. Not only have we been able to track the performance of our videos (and which parts of our videos are most effective), hosting the videos on website landing pages and including transcripts (which Wistia can generate at a very reasonable cost), as well as taking advantage of Wistia's SEO site map, we've seen our Google ranking rise. I don't know if that will be true for everyone, but shifting our focus away from YouTube to hosting videos on our own site increased our backlinks and for some of our keywords, moved us to page one.