When choosing between a javelin spear and a short spear, consider your intended use. A javelin is lightweight, designed for throwing, and excels in ranged combat or sport. A short spear, heavier and more durable, is ideal for thrusting in close combat or reenactments. Material, balance, and shaft length affect performance. If mobility and range matter, go for a javelin. For strength and versatility in hand-to-hand scenarios, a short spear is the better choice. Know your purpose before deciding.