There is only one advantage of buying FSD over EAP and that’s the price freeze. Judgement is up to you if you ever get to the point of huge difference between FSD and EAP in the life cycle of your car. I would say, there will be significant differences in next 3 years but I might be wrong. So in my calculations, if you see having your car more than 3 years, go for FSD and if not, EAP or stay with AP.