sara full helm not mem and dragon full helm i think
Gm Helmet is best and you can buy it online.
After you have beaten the dragon slayer quest you can have acess to the champions guild just near varrock if you go up stairs you can buy a black helmet.
You can buy them at Best Buy or Future Shop.
world 2 is the best world to buy everythings
depends on which full helmet you want.....buy the following items at the grand exchange in varrock: bronze full helm = around 50 coins, mithril full helm = around 1000-2000 coins, adamant full helm = around 3000-4000 coins, rune full helmet = around 20,000-21,000 coins, (members) dragon full helmet = around 30,000,000-40,000,000 coins.............the dragon full helmet is the best out of all the full helmet, its price is ridiculous but its appearance is marvelous, it requires level 60 defence and a membership to runescape.... i hope this helped :)
nothing
depends on what type.
You cannot plume helmets in runescape. But you can use a full helmet with a herald stand in your Player Owned House, and there are treasure trail rewards with different coloured plumes.
grand exchange.
The best way is to just buy new ones or get them out of another helmet
The best way is probably to buy it from the Grand Exchange.
There are many helmet dealers in the Chicago area, but the best place to find a Simpson helmet would be to look on eBay for they are cheaper than any of the helmet stores in Chicago.