Well originally you seemed indecisive so I'm giving you the best information I have. Based on your last comment it's seems you've already decided and/or have some experience with both. Have you played a warrior yet in 4.0? If you're just theroycrafting what the possible upsides of smeld are, I'll give you a small dose of reality and let you get to it.
Smeld/Charge is great. There were times when I felt it was the better ability. In the current environment, it's more likely to put you into a bad position. Warriors simply can't afford to be in open ground for long (unless you've got dedicated heals.) Doing all that work to get into range just to have a hunter snare you up and disengage away still wastes your charge. The same way a Frost mage frezes you and blinks.
To survive as a warrior you need to pick your spots. Smeld/Charge as an open field tactic is far superior to EA. They days of warriors being able to go for long periods of time in the open are gone. Now, you have to be in close quarters, where you can use los to your advantage vs hunters and other ranged classes that dominate the bracket. In these conditions, EA is far superior to smeld and that's were you should be most of the time.
If you're in a premade and you have healing support and other teammates to snare targets down for you then by all means go with nelf. The tactics are different if you have a team supporting you, but, we're not getting a lot of that at 19 yet. For pugs I tend to go with what gives me the most all around utility. If some semblance of balance ever returns to this bracket, all this could change. Right now, today, I'd rather have EA. Based on what I see in the patch notes for 4.0.6, I'd really rather have EA.