Thanks for the reply. I went ahead and ordered a DWA-160 adapter. I suppose it's total luck of the draw which one you get, that is if you're ordering online. Maybe I should have gone to the store to make sure I got the latest version, but I was unaware at the time of ordering that there are so many versions being sold as the same product.
At any rate, I now own Ver. A1. So, I'm not sure if there are any advantages to having the B1 version or what they might be. If it's just user interface, I'm not sure it's worth the trouble of returning (yet again). I had heard that the chip maker of the A series had dropped firmware support, which is what necessitated the change to Ralink. So if this is the case, I suppose I own a product without any firmware support. At any rate, it doesn't seem to do 5ghz and 2.4ghz at the same time, and in pure 5ghz mode, the connection speed is actually pretty bad. So I am using it just like I would my original DWA-556 that I already returned, just 2.4ghz.
Perhaps I bought this product too soon in its the evolution. First adopters are often the biggest suckers...so I suppose that's me this time.