$300 extra to save $50/deductible, that is like paying for 6 savings upfront... do you anticipate to have more than 6 warranty work done?

You are spending $3600 now, plus deductibles, plus whatever amounts that are not covered under warranty... do you anticipate any major work needed in the next 20-30k miles to justify $4k+ cost now??

I chose to take the risk and didn't get extended warranty, but mine is an 05 3.0 with about 55k miles on it now. If the $3k-$4k worth of warranty covered the rest of the life of the car, that would be well worth it.. but since it only covers 2-3 years period, one needs to consider chances of something happening in that period only. It might be a good idea for your car though, if there are known issues that come up between 75-100k miles.