Hi. I am only really familiar with the Polk SDA 1B. I am going to look at a pair of 1.2 TL's. Could someone be kind enough to help me identify these speakers as claimed? As I understand it, these were the last 1.2's made by Polk and therefore it seems likely they are better than earlier versions, but I am no expert. I just love the sound of the SDA 1B's and can only IMAGINE how good these are!! Thanks for any tips on this pending purchase.