I am in the same situation (t2i). I was going to order a Nikon D600 even though it would mean dumpning my lenses. However in the last 48 hours the canon 6d has been released and the few pictures posted on line certainly hint at very high ISO performance. It does not have the fps the 7d has and likely not the same autofocus capability (but in reality I miss far more action shots for indoor sports because of ISO) so I am going to wait a few more days, maybe even a couple of weeks in order to gather more information. Maybe even dpreview will have released their review on the 6d.