We have a Glowbuoy but I don't like it much. It tends to get in the way and my dtr conked her head on it the last time we used it. Resulting in big tears and the end of swimming that night.

We now have a Nova which sounds similar to what you are considering only with 100 w bulb. I like the color lenses better than the clear and they are easy to change. Here is where we got ours.

http://dsenterprises.zoovy.com/product/NA409-NL100

Dianna