PropStream can hand you ten thousand leads: off-market lists, pre-foreclosure filters, owner data, and skip tracing at national scale. What a data platform cannot tell you is which of those ten thousand is safe to buy — or the most you should pay for it. That judgment is ReInvestIQ's entire job: validated inputs, a computed maximum offer with the exact levers behind it, and a stress-tested GO / NO-GO verdict on any address you bring. Here is the side by side. Turning a lead into a decision: full underwriting, multi-source rent validation, a computed walk-away number, and a verdict stress-tested against the downside.