Ok i have been dibbling and dabbling...
Wich of the 2 is better
Dysmorphic Samophlange of Discontinuity
http://www.wowhead.com/item=105117
VS
Nazgrim's Burnished Insignia
http://www.wowhead.com/item=105051
quick anwsers:
no with nazgrims i dont have any mana isues aslong as i just pay attention