What's your favorite Shoot 'em up games?

[yellowpearl64]

I wanna talk about what's your favorite Shoot 'em up games,

(This picture is made by me)
There's too many games that i like but My favorite Shoot 'em up games are...

11: R-Type (for sega master system)
10: Zero Wing (for sega genesis)
9: Life Force (for nes)
8: Thunder Force III (for sega genesis)
7: Phalanx (for snes)
6: Darius II (for sega genesis)
5: Eliminate Down (for sega genesis)
4: Thunder Force IV (for sega genesis)
3: Gradius Gaiden (for ps1)

2: R-Type III (for snes)

1: Gradius II (for nes)

Honorable mentions!
Gradius III (for snes), Metal Black (for arcade), Hyper Duel (for arcade) and Over Horizon (for nes)

So what's your favorite Shoot 'em up games?