Vanguard Tax Service on Straight Avenue is a highly recommended business that provides efficient and knowledgeable tax preparation services. Customers praise the quick turnaround, the preparer's patience in explaining the details, and the discovery of deductions they were unaware of. The business is particularly praised for its support of women-owned enterprises and its ability to clarify complex tax matters in an understandable way. Overall, Vanguard Tax Service is a trusted and reliable choice for those seeking assistance with their taxes.