Collar help!

Are prong collars recommended for dogs that pull? I have only heard negative things about them but often see them in training videos. We adopted a one year old pitty from the shelter about 1.5 months ago and he is already so much better behaved than he was when we first got him but he really lacks focus when on walks sometimes, it can be very frustrating. We have a slip lead, bungee/waist leash, harness and regular collar/leash setup and none of them truly help keep him from pulling. Do you (or anyone reading this strongly recommended or not recommended prong collars to help with this? Thanks in advance!