I don't think so. But I have heard good things about it. I think I have lost my interest a little bit, maybe I have seen clearly what's going on. Marketing/reviews is always better than what it usually sounds. I think I will stop for a while after harmony. Also it's about enjoying music, not comparing :)
You're right. Already spent lots of money on it. I think maybe I should focus more on music itself. That is so-called "tuishao" in Chinese.