I am definitely still learning how to do the diligence necessary to call a deal "good", and I have also been wondering if software like this exists.Ideally, I'd love to have a tool that could be almost completely comprehensive: Comps (with photos), nearby rental details, craigslist searches, very rough calculations of things like CoC and NOI, etc..I know sites like Zillow give you some of this data, but it's obviously only one source.

I am looking forward to this great tool.

Erik Drentlaw there's a couple good rental analysis tools in the BP FilePlace you should check out.What type of P&I financing has you at $580/month?

I cannot wait to use all the tools this site has to offer. 

Your contractor should have tools to cut it into whatever shape and sizes though.

A popular method is also finding a seller who will finance part of your purchase (seller "carryback".)

So while taking your own pics is important to make sure you don't miss anything, I find my walk through notes to be the most important tool.

This has turned out to be such a wonderful tool because tenants are coming back to me paying debt because they can't get the apartment they want because their outstanding balance was reported to Experian Rent Bureau.I can honestly say that there is no one calling my office and trying to get us to use different add on services that they have, but they will send out an email and if you are interested in it  then you call them, which is what I did when we started Tenant liability insurance.  

Very helpful tool!

I carry a Benchmade a/o knife that I honestly use as a tool but could be a "worst case" scenario life saver.