@Steve Kordish my main suggestion to to check out all the free ones.  

Where can I find a list of information I need to gather from seller for verification?

The lender will have to do a verification of employment prior to approving the mortgage and you need to be able to prove it's a primary residence as well (driver's license address, incoming mail to the address).  

I have been getting rental verification requests from other properties they've applied to. 

When u say either service sucks, what other services are u comparing them to to make that claim?

If they are VERY professional, they will have their processes in writing as verification that it is enforced equally and fairly by their entire staff. 6.

@Bryan BealI'm getting about 1.5 all the way to to 2.25 on my rentals.

Beyond the mechanics of the lease, there is a lot to think about at first - like pets and fees, income verification and scams, pricing strategies, and communication with your tenant. 

Va Lender Handbook, Chapter 4 Section 2 (Income) Paragraph O states: Verification: Multi-Unit Property Securing the VA LoanVerify:cash reserves totaling at least 6 months mortgage payments (principal,interest, taxes, and insurance - PITI), and documentation of the applicant’s prior experience managing rental units or other background involving both property maintenance and rental.Analysis: Multi-Unit Property Securing the VA LoanInclude the prospective rental income in effective income only if: evidence indicates the applicant has a reasonable likelihood of success as a landlord, and cash reserves totaling at least 6 months mortgage payments are available.The amount of rental income to include in effective income is based on 75percent of:verified prior rent collected on the units (existing property), or the appraiser’s opinion of the property’s fair monthly rental (proposedconstruction).Note: A percentage greater than 75 percent may be used if the basis for suchpercentage is adequately documented.Verification: Rental of the Property Applicant Occupied Prior to the NewLoanObtain a copy of the rental agreement on the property, if any.Analysis: Rental of the Property Applicant Occupied Prior to the New LoanUse the prospective rental income only to offset the mortgage payment on therental property and only if there is no indication that the property will bedifficult to rent.

I’m going to to take whatever documents regarding the deal to a lawyer to cover myself the best I can, I’m just not sure of anything that someone who has done a Subto deal would know or can warn me about before I follow thru with escrow