If we didn't already mention it, cpap-supply.com is one of the better online sources. Another one is cpap.com.
There are lots of blowers to choose from. As you check them out and read reviews, make sure to evaluate how easy it is to get the 90-day report off of the recording chip. Take note that some manufacturers like to "block" you from easy access by charging you for software and attachment cables. This is one reason I'm very happy with my DeVilbiss Intellipap machine. The reporting is FREE (see the report generator at
www.intellipap.com click the help section to see some sample codes and report).
Be ready to purchase a few masks until you find the right one for you. The big push here is comfort so you don't brush it off in the middle of the night.