anybody have any luck with the $100 ea sparkplugs compared to the $0.50 ea. ones ie 100% hp 200% better gas milage

 

Use the $8 Motorcrafts. You should do coils while you are at it. You have a wide range if prices there from $8 eBay deals to $75 Motorcrafts.

 

PT Barnum might have been too optimistic about only one sucker born every minute.....

 

If you have a 2003 - 2006, then price of the spark plug shouldn't be your concern: high strength construction of the shell and ground shield should if you don't want to use a Lisle LIS65600 again...
This pretty much means no more Motorcrafts!