I'm into my second season with a Shimano DH3N71. I use it on my daily commuter bike from mid September to Mid April, about 4K miles per year. I have a Lumotec 3w light, works fine for suburban riding where streetlights hit my route fairly well. High end HID or super bright re-chargable lights seem overkill for my needs. I don't want to hassle with recharging every day or overcharging the batteries. Been there, done that. I've tossed out several medium priced rechargeable light systems due to batteries failing after just one season of daily use. To buy a replacement battery costs as much as a new system. I like the freedom of my dynohub.