The E74 is one of my favorite all-around medium wind boards with sails from 4.5-5.3. Even thought many people who are used to a more traditional wave board don't like the Evo ride, once you get it dialed you'll find that it handles rough water and over powered conditions extremely well. Once think it rarely does is catch or trip when you're technique is less than perfect. I didn't care for the E75-07 compared to the earlier models since it feels a bit sluggish to me and more wave dedicated.
Look at some of Ola's older posts; he does a good job of describing how the board handles rough water and what to expect when really powered up.