Busch & Müller IQ-X vs Lezyne Lite Drive 1000XL

The Busch & Müller IQ-X wins 92 to 82, but this comparison is absurd in a way that needs explaining: these are two lights that barely serve the same purpose. The IQ-X is a hub dynamo light; the Lezyne Lite Drive 1000XL is a battery light for road bikes and mountain bikes. Which one to choose depends entirely on what your bike has and what you do with it. The Busch & Müller IQ-X delivers 100 lux via hub dynamo with the most even beam in its class, capacitor-backed standlight, StVZO certification, and runs forever without ever charging a battery. It scores 100 on usability. The Lezyne Lite Drive 1000XL delivers 1000 lumen (not lux — it has no StVZO rating so it's measured differently), has 1.5 to 20 hours of runtime depending on mode, and is CNC-machined aluminum. Without StVZO the Lezyne is technically not legal as a sole front light in the Netherlands, though enforcement is rare.

For a permanently equipped city or trekking bike with a hub dynamo the IQ-X is unbeatable — it works, it stays on at traffic lights, and it's almost maintenance-free. For a road bike or mountain bike without a dynamo it simply can't be fitted, and the Lezyne is your only option in this comparison. The Lezyne scores 96 on brightness but only 70 on usability due to the short full-power runtime.

For commuters and trekking riders with a hub dynamo we unconditionally recommend the Busch & Müller IQ-X, unless your bike has no hub dynamo — in that case the Lezyne Lite Drive 1000XL is an excellent alternative, provided you supplement it with a StVZO-compliant light for public roads.