American Signature aka Value City Furniture brand Mattresses

[WhipperSnapper]

My fiance and I found two American Signature brand (Value City Furniture brand) mattresses that we really liked for $500 for a queen set. Alternatively we could pick up a queen Sealy plush matress (which is supposed to have a value of about $900 at regular stores) from Costco.

Does anyone have any experience with the American Signature line? They sure did seem nice, but I'm skeptical and Costco has such a great return policy and I know that at Costco you'll get a decent value for your money.