I just test drove both an EB and a 5.0 this morning....both in SCREW 4x4 models. I thought the EB felt more like a "V8" over all, than the 5.0 did. Both were super nice, but I found the EB to be more "crisp", and had more of that "set you back in the seat" power.

 

I drove a supercrew lariat 2wd today with 20s and 3.55ls and all i could say was WOW! Its definetly a put you back in the seat power like everyone says! I am sold on ecoboost!