Personally, I am very pleased with the WSFSB program. That is because it has enabled me to get strong whilst completing speed and endurance sessions throughout the week. I can't see myself getting off that program anywhere in the near future as I am getting stronger by the week, gaining size and improving my speed.
If I was only going for strength and size then I would be looking in Dave Tate's direction. Just look at the end result. Tate is a friggin monster and has the gorilla strength to go with it.
Both programs will get you results so I wouldn't stress too much. You are in good hands.