I used them at my company, because I was sold on their marketing. In the years that followed, we reported over 300 issues to Jetbrains, and had the opportunity to observe their abysmal software development. They told us numerous times to upgrade to preview releases that supposed to fix our reported issues, but then those contained new issues. When they finally had a stable RC, they managed to fuck up the final release by last-minute changes. This happened at least 3 times while we were their customers. I ragequit all ties with that fucked up company and never looked back