Canon or Nikon...
Many have their choices and their opinions to which brand is better, but I have found that Canon fits all the needs that I have. It is also the first DSLR I have ever owned. I guess that makes me slightly biased. What ultimately matters is that your wedding photos are high resolution and sharp.
The gear I use is just as important as the person who you are hire and trusting to take the photos of the most important day of your life. These are the images where you and your spouse will be able to look back on and relive the moment over and over again.
I have spent a small fortune on this gear because I knew that I can depend on these devices for I deliver high quality images.