What's the best way to make a bullet?

[anonymous_user_c42c298e]

I make a game about space for android. There are some ways to implement bullet,

1. 2D cross textures that always look at you like a brush in World of Tanks
2. 3D real bullet
3. particles (lasers)

I only need it to be fast and I want no freeze or lags with it. And of course, I need to handle collision.