Thinking about buying a "newer" truck - any advice?

the 5.4 plugs are Installed with maybe four threads, so they blow out, break off, etc. Several warranty companies will sell warranties for the ford, but they exclude the plugs and head. I would buy a Hemi dodge. the 5'7 is a very reliable and strong powerplant. My brother-in-law had to pay 2500 for a new head, and labor because his plugs blew out.