@Marc Afzal From a data quality stand point I'd say we are comparable to Listsource (Corelogic), Data Tree (First American), and Agent Pro 247 (Black Knight / Fidelity) for assessor and recorder data (the big 3). For foreclosures were better in AZ, CA, NV, OR and WA, for 2 reasons: 1) they aren't timely in a bunch of counties, and while we buy a lot of data, we abstract foreclosure notices in those counties because we haven't found any sources we can buy timely enough data from, which our auction investors rely on, and 2) we track the trustee sale auctions (postponements, cancellations, sales), which none of those companies, or Rebo do.
I don't think any of the big 3 have vacancy, we do. Rebo has divorce and probate, which I've chosen not to offer, because I think the data quality is often poor, and more importantly there are better ways to do those businesses then public records filings (obits are available much earlier for example). Tax is easy to get from most counties, and while we will add it sometime soon (we have it internally), I'm concerned it won't be much of an opportunity after we make it widely available. My suggestion is to get down to your county now and work those while you can. We have many of the top tax default investors on our platform, and even though we don't offer those lists, they still use us for those properties, they just have to take the extra step of adding the properties to a List. We find people do this even when they subscribe to another product to get a list.
Finally, you've mixed some apples and oranges. Data Tree would be more comparable to Corelogic's Real Quest (property information, then Listsource (property lists). We're kind of a combo of the two property information and lists, plus people data (phone, email, demographics, social profiles), etc. That last bit, we really stand alone on, vs the big 3 (and others).
Hope that helps.