I've been leaning 1D3. With Canon soon to release their new 1D X, I can see gently used 1DMK3 being available for well under 2k.

The 24-105mm with IS do make a lot of sense, especially as I've got a cherry picked "dust pump" 100-400mm that's been sitting on the shelf since selling the 40D.

Thinking before summer I'll have my gear squared away.

Appreciate the insight.