Nice product, lasering just OK
Lasering is on surface and comes out pretty light and hard to read. Note that I also tried clear glass and found the same thing.
Highly suggest you use the biggest boldest fonts to make things as readable as possible. And when you submit your graphics, make sure you have no borders -- maximize the size (and use the photo ratio of the plaque, say 6x4) as there are laserable borders already and you want you fonts as big as possible.