I have used RealEstateInvester tools trial version for couple of weeks and I find it's ok, but little expensive (if I need both PropertyValuation and Analysis features). I've found Property Data & Analytics | CoreLogic RP Data and looks relatively cheap. But not sure how it is as they don't have a trial period. There are some free tools (eg: onthehouse) for basic analysis. But I guess it is required a proper tool in order to have a close look. My question is according to your experience which tool is suitable for investment property analysis.