What can you say about the availability of content for smart 3d tvs?

Are there still very few like others claim? I can feel that I would need an upgrade soon and most tvs I saw in the stores (online and brick and mortar) are of this kind so I started reading about it. This is one of the main concerns that is being highlighted by people who believe that this is just gimmickry. I was also surprised that there are more brands now. I saw LG, Vizio and even Mitsubishi. It seems that LG is the most promising among the new brands I noticed.