If you are referring to me, I have tried a BP/W and it did tilt me forward. I tend to be a bit top heavy when in the water. And for me ,to not tilt, I end up putting 8lb out of the 10 that I dive with on the tank. It was something I really was not comfortable with, not being able to ditch more weight if I need to. I dive rec and rent al80, which we all know get quite buoyant when low on air further pushing you forward. So it is not that I did not give it a try, it is something I am not comfortable with. Not everyone likes BP/W. If it is right for you, then cool. But it is not right for me, and no matter you may think I did wrong. It will not change the fact that the BP/W does not work for me.
It seems that on the board the BP/W divers are way more vocal and tries to push something that is not for everyone. We are all different, I respect the views of the back inflate and BP/W divers. But some divers are so one sided that they post that the person did not like the BP/W was wrong or they did something incorrect and that is why you had that tilt issue. BP/W is not the setup for me because it does not work for me.
Actually those bc I looked at were in the 300-400 range if you know where to buy them from. I do my research before I buy.