I have also come from a 40D after a line of 20D, 30D 350D & 40D
Its another league of a machine.
Its the 85mm F1.2
It really does feel like a different class in comparison. I also splurged out on a 70-200 lens and they're a superb combination, not quite as large or heavy as I thought it would be.
But that 85mm lens does look big though!