It kinda depends on what you want it to do. Personally, I am enjoying the official valve dock. It does all the things I want it to do and I do not need any additional functionality out of it. I have heard that it is finicky with certain types of tvs though, so you might want to search for your tv model(s) and see if anyone has had issues with that before.

That said, if you want extra features like storage or whatever, then you need to look for those.