IMO The Warrior T3 is only SLIGHTLY better looking then the T7 (25m) ... Definitely not something worth spending 10's of thousands of gold on (Considering 25m Naxx is pretty much Soloable now, some bosses may require a friend).
Kudos however to anyone who has received most or all of their set! Not only would that require a ton of gold but more-so the patience and discipline to check the BMAH every day and sit there bidding to the last second on each piece.