Inquisitor Lord + Henchmen - 146 Points
Needle Pistol
Close Combat Weapon
Heavy Bolter Warrior
Heavy Bolter Warrior
Heavy Bolter Warrior

Eversor Assassin - 95 Points

Inquisitorial Stormtroopers - 100 Points
6 Hellguns
2 Plasmaguns

Inquisitorial Stormtroopers - 158 Points
3 Hellguns
2 Meltaguns
Chimera -
Hull-mounted Heavy Bolter
Turrent mounted multi-laser
Smoke Launchers

Total - 499 Points

The basic idea is that I get a strong fire base in the Inquisitor and his henchmen, which have the ability to lay down covering fire for eversor if he cant reach combat on the first turn (which on the size of board a 500 point game is played on, he may well manage). The plasma stormtroopers will also put down some fire, and deal with more heavily armoured foe. Finally, the last squad will deal with any armour the enemy decide to take, and once that is done, settle down to shoot a bit with the chimera's weapons. Does this list seem ok?
I want it to be ok against all opponents, as I dont really have a main army I fight. I could fight Tau, Eldar, Dark Eldar, Chaos or Necrons, so I really need a versatile list.