I've been watching this thread closely as it started shortly after I placed my order. For me, I went ahead and pulled the trigger on the 6D. Once you weed through all the negativity, everyone here has some good points and great understandings about both camera's. I've had my eye on both camera's for a couple of months and did a lot of digging before clicking the button. I feel I have a pretty good understanding about all the arguments for both camera's. I haven't had a chance to shoot anything yet as I just got the camera yesterday. So, if it doesn't meet my biggest requirement of low light, indoor sports shots, I will most likely return it. I know, I know, some of you are chuckling to yourselves right now about that last sentence. But after searching through the 6D shots on Flickr and on this forum, I decided it was worth a try. It also seems like a more natural evolution in my flow of cameras progressing up to the beast, the 5DIII.
So, here is my rationale:
- B&H has a really good deal right now for a package deal of the 6D, 24-105 lens, Pixma Pro 100 printer and 50 sheets of 13x19 photo paper. And, holy cow, this printer is HUGE!
- The DPReview camera comparison page (http://www.dpreview.com …-to-our-studio-test-scene
) appears to show that the 6D has slightly less noise at higher ISO's. This was a big plus. And I hope its accurate.
- Snapsort comparison (http://snapsort.com …-Mark-III-vs-Canon-EOS-6D
) barely gives the edge to the 6D, but not by much. And from what I gather, this is a highly untrusted comparator, but its good for quickly pointing out strengths and weaknesses in cameras spec's.
- The 6D is about $1500-$1800 less than the 5DIII (when purchased as a kit).
- The 6D has not been out nearly as long as the 5DIII and I fear the 5DIII may be Canon's rumored 3rd DSLR to be upgraded towards the end of this year. If this is the case, I may have enough saved up to buy it by the end of the year, or this time next year.
- Probably 99% of my shots are done with the center focus point. If not, and the 6D has problems with this, I'll have to hope its not low light and the 70D can handle it.
- The FPS is about the same as my T4i. This was fast enough for most everything I've been shooting. If I need faster, again, I'll have to hope I can rely on the 70D.
- The wifi on the 70D has shown to be a handy addition. Likewise, with the 6D with the added bonus of GPS capabilities.
- This was a great opportunity to sneak in the purchase of battery grips for both the 70D and the 6D without my significant other knowing any different.

I'm sure there are other things that I've forgotten, but either way, I'm excited to try a FF for the first time and see how I do. I'd also like to say, I'm not choosing sides here, this is just what worked out best for me and my own logic. If I had unlimited resources, would I go the same way? Prolly not. I'd buy the 5DIII and the 6D to go with the 70D in that case. Then I could give some great side by side comparisons to end all of this bickering!
