Professor B Math

Professor B math was recommended to me for my daughter.  I did find a previous thread on SCM about it, but it was several years old.  Is anyone still using it? Liking it?  Do you supplement?  If you quit using it, why? It appears to me that it is teacher intensive and I am kinda wanting to steer away from that.  But, also want to find what is the best fit for her.  We are currently using MUS.  The people who recommended it to me were excited about the “tricks” that are taught, etc.  From some reviews I found online, it appears to me that the “tricks” are very similar if not the same (but worded different) as MUS.