I bought a Samsung 4.1 soundbar at Walmart last week. Sounds great to my old ears. When I was looking I went to the Best Buy website and they had the exact same thing at a higher price so I bought it at Wally. The difference between the two is the model number. The Walmart I bought is HW-B47M which product registered fine on the Samsung website though not shown. The Best Buy model is HW-A47M and is shown on the Samsung website. Does anyone know why the difference in the numbers? My wife said it may be so the retailers don't have to price match which would make sense. Would appreciate input.