M.B.
B.,
I know your pain. I have a 2 1/2 year old daughter and a 6 year old son.
We've used a modified cry it out method for the simple reason that it feels like a knife to the heart when my "baby" is crying and I know all I have to do is go in there and pick her up and she'll stop.
What we do/have done:
1) Do the normal bed time routine and put little one to bed.
2) If they start crying fussing let them go for 5 minutes, unless it's a straight I'm pissed/scared cry then go in immediately.
3) If they're still fussing full strength at the end of the 5 minutes go in and comfort.
4) If they're winding down at the end of the 5 minutes I give an additional 5 minutes. Again though, if the fussing changes to an I'm pissed/scared I go in immediately.
I remember before I had kids I would wonder how the heck parents could tell the difference between their babies cries. Now that I have my own kids I don't understand how you can't *not* be able to tell the difference. :)
You know your baby best and know what his cries mean. Follow your instincts and good luck!
Hope this helps,
Melissa