Hmm. The 1D X is only heavy until you hear that glorious 12 FPS, and the 5DIII is only blah until you use it and realize how much better it is than the 5DII . I'm kidding, but I do love shooting with both of them and I find the extra weight on the 1D X to be pretty minor when attached to the 300 or 70-200 2.8.
But I want more than the 70D! 6D has been fun and will be a second. 1DX - so heavy??, 5D3 - perhaps, 7D2 - like others I'm (im)patiently waiting to see. Never the less, I'm not at all displeased with CANON!
The 7DII is going to be interesting when it comes out but I fear it will disappoint a lot of people. The 70D and 6D have really encroached on it and Canon's not likely to cannibalize 6D sales with it. It will probably be a 70D in a tougher body, with limited upgrades like 9 or 10FPS and extra video features. If it has the 1D X/5DIII AF and can AF at f/8, that will be huge, but I bet they'll cripple that. I really doubt it will be the mind blowing, 5DIII/1D X destroyer many hope it will be.
I like the feel of 1D X with 24-70 II, 70-200 f2.8 IS II, even 85L II. I haven't try my 400mm on 1D X yet, but I'm sure the grip would feel MUCH-MUCH better than 5D III.
I'm waiting for 1D X II to come out, so I can buy a decent pre-own 1D X