I've made some normal hot-rodding mods to my truck. It can almost run even with a Hemi Q/C, yet now gets 19 MPG on the highway. I love this truck, and can't pry my keister out of the seat (hence the abnormally high miles on it per year). It's reliability is rock-solid, and I can easily drive twelve-hour days or more. I'm a GM convert, and will always have a DCX Ram from here on out.
The cab room! It's huge. The 4.7, while a little thirstier than a Hemi (with similar driving habits), is very responsive to modifications. It also sounds better than any Hemi when it has an opened up exhaust.
Too late, they made them with the '06. Better suspension, even more cab room. But they still need to find the sweet-spot between power and economy when it comes to their engines.