For your first helmet and basic events you are not beat this Pyrotech open face helmet from these guys. Bell makes Pyrotech and it basically the same SA2005 helmet for half the money. Me and two others I know all got Flat Black and love them. Removable inserts, etc.
http://www.helmetcity.com/page/HC/PR...ect/openfacesa
Pics of mine with 1addicts.com stickers.
http://www.1addicts.com/forums/showthread.php?t=7472