Wilcoluca
Think from memory that full svs is full service and one time is exactly that, you use flight safety training facility just once. When you get the price through from them, the break down is more expensive for the full service, but depends on you. If you renew the year after the full serivce, might work out better and cheaper in the long run.
It is expensive to train with flight safety although that really is the only draw back. Very high standards and good company. Try CAE Simuflite and ask for price, they are usually very competative on price and also training is a very high standard too.