Just got a new items email from PA. They had a micro-processor digital heater that looked pretty neat and accurate. Anyone had a chance to try one? Kind of pricey, but if it works as well as they market it, looks promising 
http://www.premiumaquatics.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=FC-MP-300&Category_Code=Fishcue
http://www.premiumaquatics.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=FC-MP-300&Category_Code=Fishcue