Agonizing over full frame vs. crop for next camera

[JMapleton]

I have a T1i and a 6D and the high ISO performance is a huge step up. 6D is a great camera.

 

[blastingcap]

I have a T1i and a 6D and the high ISO performance is a huge step up. 6D is a great camera.

Well in all fairness, the T1i is ancient... a high-end modern APS-C/DX camera like a 7D isn't quite as far behind full frame. It's like 1-stop difference. Congrats on the 6D.