I love my CPAP, It wasn't dramatic for me when I started using it. Its was for a few of my friends, but after a week or two, I noticed my extreme drowsiness in the afternoons had dissappeared and I could drive on long trips without going to sleep.
I have the heated humidifier, but I only use it when I am already sick and it helps clear my sinuses.
It definately makes a difference. Unfortunately for me, I have a $1000 deductable which kicked in for the sleep study

but at least I am not depriving myself of oxygen at night.
Pastor Daryl
Daryl S. Cook, Senior Pastor
Pearl Church
The Church of God of Prophecy
Pearl, MS