Dinklage has the better voice. But Noland is---far and away----the better voice actor. The difference is jarring at first. Both because of the difference in voice....but also because Noland embues the Ghost with a very different personality. Dinklage played the Ghost as some sort of schizo combination of C3P0's anxious fretfullness....and R2-D2's over-the-top bravado. The problem with that approach, is that you always HAVE to have the two together--in two SEPERATE PEOPLE----for that to work. It doesn't work in a single person. It doesn't make any sense that he's panicky when the Hive come pouring out of the Temple of Crota, and when we first encounter the Vex.....but then downright sardonic when we first encouter the Cabal ( Well I guess THAT must have been their failsafe). North plays the Ghost more like a "pocket Indiana Jones". A very intellectual....but consistently brave companion. But one given to moments of black humor (Snakes? Why did it have to be snakes??) . You don't hear the anxiety that you hear in Dinklage's voice when his Ghosts asks, "Can't we just stay here with the murderous robots?" Its more gallows humor. The same gallows humor you hear when playing the Garden Spire mission, and the Ghost has to open the door at the back of the Iron Line...and North Ghost says, "I best getting working on opening that door. YOU MIGHT WANT TO STAND BACK, YOU KNOW WHAT HAPPENS WHEN i OPEN DOORS...." Give it time. My intial gut-reaction to North's performance was "I don't like it". But it was mainly that I don't care for high-pitched, nasal voices. Though once I got past that bias, I could see that he was doing a MUCH better job of bringing the Ghost to life than Dinklage did. ...and I think he's the better choice going forwards.