I have had my Edge card for years now. (2 actually) There are very few games that have not worked. As soon as it is updated it is great. As people have said, sonetimes the updates are a little slow to get promulgated. There are rumours that the CycloDS team are the ones behind Edge. I dont know.
Ultimately, if one of mine broke I would get another!!
Ultimately, if one of mine broke I would get another!!