I've never personally talked with either one of them but I know one of my friends knows tanner and said he was really cocky and assholeish before chad's but is more chill now and is just trying to take the sport to the next level. I have also skied Sunday River a lot and everyone there says Simon is one of the nicest guys you'll ever meet. Everyone has there own impression of these two, but most are based on their on-screen personality which everyone knows is just half the story. People say Tanner has a huge ego - but in reality it could be SO much bigger based on the number of contest wins and hype built around him, he almost has to have that ego on screen cause he's the guy who's going to take freeskiing to the main stream, Tanner is the ambassador of this sport, at this point in time it's either going to be him or Jon to bring the sport up - and since Jon is in Europe the guy that's going to do it here is Tanner. Simon on the other hand is said to be very funny and very creative and along with Sammy and Peter will take the sport over someday, they are going to push it to the next level. Since I don't know either of them personally I can't say which one is better - but I do believe that they both have their spot in the sport and are both crucial to taking it to another level.