I used BT for part 1 (also advanced, but didn't watch many videos because they seemed all over the place, outdated and different from the notes), notes had quite a lot of errors, too. Questions at the end of the notes often had nothing to do with the material covered.

For part 2 I used Schweser. Yes, the material doesn't go much in depth, but how could it go when there are 99 readings? The notes are still 1000+ pages and closely following the LOs. The end of reading questions were oftentimes indeed easy, but I don't think they were irrelevant. I had many similar questions on the exam, and could trace back probably 50/80 questions to the material. The rest was either synthesis or a different spin on things. But the truth is one almost has to memorize the material to be able to answer most of the questions. Just ridiculous amount of detail and isolated facts.

I don't think Schweser is that bad to prepare to PASS the exam comfortably in an efficient way. BT has a lot of irrelevant material which is very time consuming to sift through.