Now that my 5 box team of a paladin and 4 shammy are lv 68, I am starting to think of gear.

For the shamen, I am doing all Mail spell damage stuff.

For the paladin I am unsure. Should I go for pure tank (stamina, strength and agilty gear) or more of the Shockadin type (+spell damage and healing)? Since it is all plate, I figure I could keep more aggro with some spell damage since my sword does not kill anything even with loads of strength and agility. What do you all suggest for a Paladin Tank?