Choosing between a GPR array system and portable GPR depends on survey size, site access, required data density, and processing capabilities. This guide compares both ground penetrating radar solutions across scanning speed, coverage, resolution, depth, maneuverability, deployment, and data processing. Portable GPR is well suited for localized utility locating and confined spaces, while GPR array systems deliver high-speed, dense 3D data for large-scale infrastructure surveys. Understanding these differences helps engineering and survey teams select the right GPR equipment for efficient and accurate subsurface investigations.