two questions for everyone (one only applicable in canada). 1) are the POG and XNG (NXG??) OS pretty similar racquets? specs look similar and the canadian retailers tell me it replaced the POG 2) but TW has POG's..... are those just leftover???.... can i buy POG in Canada??? .... in Toronto, Merchant of Tennis and Sporting Life don't carry POG... will someone else, or not available in canada (or TT selling the remnants???) Thanks in advance!!!!