There is no comparison. Samsung and Sony are the gold standards for television sets. However, they use a powered glasses technology for their 3d sets, while Vizio uses a cheaper technology refered to as passive 3d. If your on a budget, Vizio offers an affordable solution that will allow you to enjoy 3d technology. However, if you are not on a budget, and would like passive 3d set, go with an LG s for slightly better image quality and features like 2d-3d built into the set. And if you want what many consider to be a superior technology by all means, go with Samsung as they truly do have the absolute best 2d image quality in my opinion but research the advantages and disadvantages of both 3d technologies and decide which is right for your needs.