The best attack helicopter

i think the eurotiger is good the Aussie army has them and chose them because of a testflight and one crashed and all survived so then they were ordered

The Marines use the AH-1Z Viper which is a variant of the AH-1 Cobra attack helicopter. It packs a 3-barreled 20mm Gatling Gun in the chin turret, hardpoints for 16 Hellfire laser-guided missiles and two Sidewinder air-to-air missiles on the wingtips.