Our experience:
1) Sales didn't know WTF they were doing. Incorrect info we had to waste time sorting out, confused when we asked them about a use case for which they had an entire-ass prominent landing page with a top level link on the home page.
2) They gave no fucks about our mostly-CDN needs. All their enterprise plans were oriented around selling us a bucket of other crap that we didn't need. We weren't able to get them under $4kish no matter what, and even at $5k there wasn't enough pre-allocated transfer to keep us from hitting metered billing. They were not interested in talking about adjusting the price down by removing all that stuff, or almost any other customization. We just needed to sling bits, and a few features directly related to that. The result was that they were not at all price competitive with our other options.
3) They were the least-hungry sales folks I've ever interacted with. It was a weird experience. They didn't act like we were annoying them or anything, they just acted like they were totally unmotivated to make a sale. Every question, no matter how simple, seemed to give them pause, and set them to musing as if they'd never even considered it. Never seen anything like it. Maybe mid-five-figures a year is too small-fish for them and we were talking to the not-even-actually-sales-folks screeners who keep the actual salespeople from wasting their time?
My guess (based solely on that experience) was that their sales organization had crazy turnover (even worse than a typical sales org), awful training/mentoring, and possibly not-great hiring. But IDK.
We did end up using the $200 "self-serve" plan because it's 1) the only self-serve plan with any kind of SLA at all, and 2) actually a pretty fuckin' good deal for the things it provides. They weren't even in our top-3 for our heavier CDN needs, though.