Best way to make bullets?

So I’m thinking of making a bullet hell and I was wondering what would be the best way to make bullets? Should I instantiate sprites or use particle systems or something else?

Thanks in advance

Particle systems are not going to be convenient for checking collisions, which is the purpose of a bullet, right? Best to prefab the bullet.

Hi,

if you want to use visible bullets like these from mario you should use a pooling solution.

Take a look into the following tutorial.

http://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/object-pooling