Ok, so now I will look at the armor abilities and see what is bad about each of them.
Sprint- Basic "run faster" mode. No complaints here.
Active Camo- Just a portable version of the powerup from Halo 3. Not really needed, but not bad.
Drop Shield- A copy of Halo 3's bubble shield. Only differences are that its portable, can be destroied, and heals health damage while inside. Once again, not too bad.
Armor Lock- Pass.
Evade- In matchmaking, if used correctly, this can save you from being splattered. In custom games with speed set to 300%, try not to splatter yourself. ;)
Hologram- If in the right hands, this can be a powerful too. If in the wrong hands, you'll look like a fool. Not really to bad or cheap, just need to know how to use it or how to identify one.
Jetpack- Don't really know what to say here. I'll let you guys figure it out.
Disscus. *Runs from upcoming flame war*