Electric combat is very popular and very competitive.
Go to
http://www.rccombat.net/
Click on the Combat Forum tab, and scroll down to "SSC" and "Electric combat" forums........Lots of good info!
There are several E-combat kits available including:
http://texasflugwerks.com/ who kit the E-Falcon and E-warbirds
Gil at
http://vinylimagez.com/ kits the ABC Assassin
http://www.airscharnell.com/team_scharnell_avenger.htm have the Avenger
http://www.treneffrc.com/ have the BattleAxe
Good luck, Dane McGee