the bullet proof armors really help?

If you can only buy one then buy the helmet. Will save you a lot.

One time i was playing GM, i was the only ghost left and there was only one GR left.

He was defusing the bomb standing still, So i JUMPED Down and Smash I Nailed him a good one in the head with my knife, thinking i had killed him then he turns round and shoots me down!

If you ask me they may save you when you need it most!

Armor doesn't help much unless you're playing GM since it blocks hella melee damage. Helmet is good for preventing one-shotting, but I personally don't use any of them. I don't like having a major advantage because I buy ZP, I'd rather have a cool looking gun with 5 extra bullets.

ud think it woudnt make much differnce, but youd be mistaken.

these accessorys combined with each other will save your hide in quite a few situations.

most weapons that did 1 shot to the head will now take 2 shots. that 1 shot absorbed can make all the difference.
3 shot guns become 5-8 shot guns.
smgs become alot easier to combat.

Snipers: this can save you when people sneak up behind you, as it give you more seconds to respond to them.

GM= knifes cannot 1-shot you, meaning they cannot ambush you as effectively. this also gives you the precious 1-2 seconds of extra defusing time you may need to win the round.

S&D= Rushing is made easier as people cant kill you as eaisly as the standard person. espcally if there using SMGs or pistols. Again, more hits required to kill you means more survivablity, meaning better chance to kill the opposing team.
Also, it can many times save you from an enemy ambush, becuase, again, you take more shots to kill.

MM= one word: mutants. Give a mutated person with 6000 hp armor, and you have a litteral tank roaming the feild.

FFA= two words: spawnkill assistance. the armor helps when people spawn near you giving you 1-3 more seconds to react before death.

TDM= More hits required to kill you means the enemy has a harder time scoring points for there team. Thus making it easier for you to score points.