Update: I used the NiteIze See'Em lights for the first time this morning and was not impressed with them at all. Even with two on each wheel (one pointed in each direction), they put off very little light. Definitely not even close to a good replacement for Nite Ize SpokeLits. I suppose you could put a whole bunch of them on each wheel for more light, but that would be expensive and sounds like a big hassle. Oh well.