I went with the 5.4, just 'cause it was only $800 or so different in price. I previously had a supercab with the 4.2 V6 and never wanted to be that underpowered again. I drove the 4.6 and just had that feeling in the back of my mind that one day the 5.4 would come in handy. I was just funny about that. Anyway, as long as you're happy with what you've got, then you did a good job! After all, your opinion is the only one that matters