I switched to C after being a long time E user because of the pip. I just always thought the pip e caused was part of the process. Never had any pip from cyp though.
Supposedly, the carbolic acid issue with test e can be rectified by heating it slowly over a long period time while brewing, which I always do. Not sure if that's broscience or legit yet.
That said, I've moved about 400 vials of E here and 2 guys having a rough time with pip isn't a terrible percentage. Including
@Stinkfinger1112 I've had 2 guys mention pip issues with C in the same amount of time. I've also had 1 guy talk to me about issues with pip from my tren a. There are so many variables when it comes to pip, it's hard to pinpoint what the cause is all the time.