The Samsung HW-J250 has been discontinued as of early 2018. Check out the updated full review for information on recent products.
If all you want is a noticeable improvement over your TVs built-in speakers for a low price the Samsung HW-J250 fits the bill. At a list price of only $130 it brings a decent, powerful sound that is clearly better than anything you'd hear coming out of a TV. Just remember, for a list price that is only $70 more you can get the Yamaha YAS-107, which can really bring your sound experience to the next level.