need help with my tanking trinkets

[lewo]

good evening everyone, i'm new to the forums and kind of need some help, i have not chance to check most of the posts but i bet many people had similar questions,
currently i'm using
corroded skeleton key (which i just bought)
http://www.wowarmory.com/item-info.xml?i=50356
heart of iron
http://www.wowarmory.com/item-info.xml?i=45158

or should i use:
gylph of indomitability
http://www.wowarmory.com/item-info.xml?i=47735
onyxia trinket
http://www.wowarmory.com/item-info.xml?i=49487

thanks for helping.

[Trademark]

As for standard trinkets, I personally like to match an armor trinket with a stam trinket. (this of course can change on the fight, but as a rule of thumb...)

Having said that, I use Glyph and Key. I rarely use my Onyxia trinket...and you can swap in the Heart for high spell dmg fights...

[Kazeyonoma]

you should ust the corroded + the glyph of indom for most scenarios, and swap out the glyph of indom for magic based fights with little to no physical damage. for most cases though, corroded + glyph of indom is your best combo.

[Nighthoof]

Yeah, I too like to roll with Corroded + Glyph for trash and physical bosses then swap out Glyph for Juggernaut when facing bosses that don't do much melee damage. Armor is just such a valuable stat that it seems silly not to take advantage of it.