Invulnerability v Melee Protection Aura (MPA)

[gaspode1]

So, to summarize, if I've read all the replies correctly:-

Invulnerability - protects from melee and magic (ie all) attacks but any action except running at normal speed cancels the invulnerability. Could you even change armour and/or do self heal during invulnerability period without cancelling it?

MPA - is melee only (not magic) but you can use Speed Ups without cancelling it. Again, could you also change armour/ self heal as above?

Depending on the answers to these supplementary points it looks like a nicely balanced pair of options to me. You pays your money & takes your choice depending on your personal preference