I was one of the rare folks who read the PPM, subscription docs etc line by line.

In Cleveland, that process has been taking 60-90 days which means that if I am relying on the rental projection from the GoSection8 site, if the offer of rent from the housing authority is below what I can accept, or below market (which is sometimes the case), not only have I lost that market time, but I also have to restart the process of finding a tenant.The website provider has stated that only a housing authority has access to the full scope of rental data; even paying for a premium subscription does not give me access to any better information.

Thus in pursuit of tax benefits you may be crowding out some investment opportunities from more seasoned sponsors who are full on their subscriptions with this tax-advantaged vehicle.  

For me the paid subscription to AirDNA has been the best tool I can find - you just need to dig in and verify the comps or use them to make your own projection.

I think you can get a basic idea for free, for $99 you can get a one year subscription with details.  

The endless subscriptions.

Yes, you are only allotted up to 40 classes within one subscription which some use to track each individual property.

Sources not subject to subscriptions are preferred. 

With basic subscription, does it provide on line state specific Lease, credit and criminal background checks?

I'm targeting NPN notes on houses around the 50-80k FMV range.Let me guess you just signed up for a monthly subscription to bank prospector.