I do not think a consumer website, such as this one or anyone you mention, will help you to get all the information regarding a property you like at the speed you are looking for.
This is one of those times I have to say, Team up with a Realtor. Local MLS in the Twincities can set up an automatic email with the properties you are looking for based on area. bedroom, bathrooms, sq ft, area, almost any, any feature you are looking for. Also, I am sure you would like to know if a property is a Traditional sale, a short sale, a property in foreclosure (redemtion period) or an REO (or foreclosed) property.
Take into consideration that Trulia, based on my expirience. has around 3 days delay from real MLS property active.
Zillow, I had notice in some cases, 7 days. So the information you are seeing, is "old".
What area are you looking for? Any personal reason no to team up with someone that will help and consult you on your next real estate investment?
Best on your purchase.