Video Card Preference for p3d

Hi,

  I would like some input as to the preferred card for P3d. I am looking at a Evga980ti classy. or asus strix 980ti, looks  like they are pretty close on the specs although the strix has some better numbers & less expensive. I am running a 4970k oc at 4.6 along with 32g of 2100 mhz ram, current card is Evga 780sc (6g ram).

                                              Thanks for any help

                                                    Ron