radon readers

Hi Everyone!
I was thinking about getting a Radon Reader that can give a reading at the end of 48 hours, what brand and model are you guys using?
Steve@twincitieshomeinspectors.com

Sun Nuclear 1027
http://radon.sunnuclear.com/1027/1027.asp

Sun Nuclear 1027 and an Alpha 2. I use a Corentium for a quick read but not for reports.