I was really considering buying the T6 pack, but at the moment, I really
need to save money. From what I have seen from the PvPers at Ker'rat, the ships are worth having for the Starship Traits. Surgical Strike seems to be the BOFF ability that everyone uses with their intel ships. Yes, the T6 ships have a big advantage over all other ships when PvPing. When it comes to PvE, you can still do STFs and missions with a solid T4 build. Unless you really want to be OP (meaning you also want to have gold gear), T5-U is just as good a T6 when it comes to PvE.
P.S. You can use vulgarity in the titles and posts on this forum. No need to worry about censoring issues.
Captain Vel Qua, U.S.S. Firebird (NCC-94123)
Captain Laci Delgado, U.S.S. Valkyrie (NCC-77509)
Captain Brenda Ramirez, U.S.S. Cordelia (NCC-94776)
Captain Tiffany Logan, U.S.S. Stargate (NCC-94028)