Clearly, if you look at current prices, the 6D jumps out as the better choice for most Cano shooters because of the value of what you get based on the price. It is useful to look at the best features of each camera as the deciding factors when choosing between the two of them. The 6D and 5D Mark III comparison is interesting because, at first glance, the two cameras have very similar specs. You can even write on both cards at the same time as insurance in case of one card's failure. I love the benefits of having two memory cards in my Mark III, a CF and an SD for the extra storage. As I mentioned in the Canon EOS 6D review those particular camera specs are not as important to me. If you shoot high-speed sports or other intense action photos, the shutter lag and maximum frames may be important to you. What about the other differences? Is this a significant difference in image quality achieved between the two cameras' sensors? That could buy you one of the most popular lenses, the Canon 24-105 Lens to go along with your camera and still have enough for filters and a tripod. At the time of this writing, you would have an extra $1500 left over in your bank account if you bought the Canon 6D instead of the Canon 5D Mark III. The biggest difference that jumps out immediately is the cost difference.