Also, I tried to used VITA once, and they dorked up my return.
If you are a single E-4 living in an apartment just claiming your basic exemption, and tax free, they are fine.
If you have a "complcated" return, as in you are itemizing more than your mortgage, they are no tso good.
Remember you can write off:
Sales Taxes
State Taxes
Registration fees based off value
Property Taxes
Mortage Interest
Student loan interest (only the first $2500

)
Alimony/Spousal Support
I suggest reviewing EVERY slide in the online tax programs.. The "interview" skipped the sales tax, becasuse I live in FL so it skipped over local/state taxes paid. That was worth about $300.