Okay guys, this is a super friendly site and I respect everyone's opinions and experiences. Here's the deal. I've spent a lot of time and effort on my #151 project and adding a headlight will be major pain in the butt regardless of my choice of headlights. I find myself torn between the two options. I don't operate my trains very often or for very long at a time so I'm going for looks in headlight choices. I've read that incandescent lamps have about a 500 hour life. That's not an issue for me. LEDs are newer technology which interests me. Either one will require a resistor which is new to me as far as use goes. Heat is not a problem as the light will be in a brass headlight casting. I'm looking for a friendly debate based on experience. I don't want to screw this installation up and I sure don't want to do it twice! Any thoughts to be shared? I am almost totally ignorant on this subject so go easy on me. Thanks in advance for everyone's patience.