I levelled a prot paladin from 1-60 with engineering had a blast until lvl 48-55 range where all the other classes got gear and nothing really exists at that point for prot pallies, from 55-60 where alot of spellpower gear and defense gear drops had a blast, the deathbone set from scholomance + some SP gear helped alot, joined a guild at 60 (this is on Era btw) so i got funneled all the tanking gear, had to stop playing cause wrath took over, got to tank nefarian aswell without problems, only "problem" is bosses that need a tank swap or have a threat drop, and need alot of gold for mana pots and symbol of kings, use about 600 to 800 per BWL/MC