set bonus

I'm looking at these from a Level 15's perspective but I'm curious of the 20 Communities' thoughts about the 4-set Bonus from these TBC Dungeon Sets: CLOTH: Mana-Etched Regalia (8 SP on Harmful Spells at 15, worst Bonus of the 4 Sets) LEATHER: Wastewalker Armor (15 Agi at 15) MAIL...