Sigma has always been my preferred choice for data brokerage services. Their staff is professional, prompt and great to work with. Sigma’s intuitive SigMAP tool is a prime example of efficient use of technology to meet customer’s changing needs. They have always delivered in critical, time-sensitive services I have needed. Sigma has shown a consistent high-level of customer service regardless of the boom and bust cycles. I never hesitate to give them a call.

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