I prefer IRC because even with the current issues, I find chatango hopelessly clunky; IRC is a lot smoother and a lot more flexible, and there's a lot more you can do with it (for instance it's possible right now to have the chat ops change pretty easily based on who is in chat, rather than have one owner who is gone for months - this is in no way your fault, Mosher)
Honestly I've been having issues with chatango for a long time before the current set of problems.