Rolling Stone: 100 Greatest Singers of All Time

The latest issue of Rolling Stone Magazine has the 100 greatest singers of all time. I love this list. They truly did some thorough research. Some familiar popular faces that we are accustomed to see all the time are: Mary J. Blige at 100, Mariah Carey at 79, and surprisingly, Christina Aguilera at 58. They also legends like: Gladys Knight at 51, Al Green at 14, Stevie Wonder at 9, Ray Charles at 2, and the all-powerful Aretha Franklin at the best of all time. I personally haven't given something like this much thought. It's more of an opinion. We know all of people will agree with the list but I've also spoken to people who are infuriated that certain people were placed above others. Again, i like this list and Rolling Stone is one of the most credible mag's out there, but ultimately, this is an opinion. Who do you guys think is Number 1?