The chance to get a proven probowl QB doesn't come up often at all. Trades of this nature are extremely rare. The Bears have had one glaring hole for years holding them back and thats QB. They made the right choice and will be a better team with Cutler.
I would consider a 1st, 4th, and Orton a fair deal...I think they paid too much. I think Orton will play a little better in Denver, and I think Cutler will play a little worse in Chicago.