wireless cards

1. Does upgrading from a card like a PCE -N15 to a Archer T6E improve Ping and download/upload speeds? If not, do i need NBN for this matter? (currently on ADSL2+, getting NBN in Jan) 2. Is it worth upgrading from a PCE -N15 Card? 3. If i were to upgrade, would a Archer T9E be better than a...