I suspect your real concern isn't that they are not contemporary enough. It may be that what is making you feel hesitant about them all is that they are pretty dark and heavy feeling (especially with the dark/heavy couch) and a perfectly matched set of furniture feels more commercial than homey.

So, my suggestion is to return them and look for separate pieces that work together, but are not matched. When you do look, I suggest a TV console that is about 25% wider than the TV (helps with balance and "breathing space")

Additionally, you may want to post this under Design Dilemma to get a better response.