I've had my eye on this for a while, since I have a lot of staining and some painting.
The deal, is the Master Series Paint Crew Plus which has both the sprayer and the roller that comes with the unit.
The regular price @ Lowe's and Home Depot is $239.00, however HD has them on special to $189.00 until 8/19/08.
I went to Lowe's and asked if they still do meet it and beat it, reducing the price by another 10%. They said they still do and i got the PCP for $170.10.
This is new, not refurbished, so if you have a lot of painting or staining to do, this seems like a great set up.
http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&langId=-1&catalogId=10053&productId=100625110&N=10000003+90401+502673

Clickable Link

I have their smaller version and it worked REALLY well...I was repainting a townhouse I rent out and could only work on weekends...left the paint in it for a week at a time and had no trouble with it...just make sure to clean the nozzle. Other thing to look out for is you have any dried thick paint, when you get to the bottom it will clog the filter...only thing I had issue with, but still wasn't that big of a deal.