What are people using for step lighting? There seem to be a number of options available, varying in cost and complexity. I don't really want to use one of the systems that has a bullnose and lights built into the top, front or both. I really want to just build the steps with a little overhang and mount something into the gap. I also don't want to have to replace an entire rope of light if one bulb goes bad. What are the most common solutions?