Start by assessing where you’ll use it most and which devices you plan to power. The River 2 family includes models with different capacities and outputs, such as River 2 Pro delivering 768Wh of capacity with 800W total output and multiple outlets, while River 2 portable stations offer flexible charging via AC, car, solar, or USB‑C. If you expect to run heavier devices or power several gadgets at once, the Pro variant makes sense; for lighter use, a smaller River 2 can be enough and keeps weight down. Fast AC recharge is available on some variants, notably with 70‑minute charging in suitable setups.