Choose a javelin spear by defining its purpose: training, display, or collection. For training, prefer competition-grade carbon or aluminum shafts with regulated weight and balanced tip for safety and performance. For display, select ornate or historically accurate pieces with durable mounts and protective finishes. Collectors should prioritize provenance, craftsmanship, materials, and condition. Always check size, balance, tip type, and venue rules to ensure suitability and longevity for years to come.