Which one is better to pierce your cartilage with, gun or needle?

A needle.
A gun cannot be sterilized. Meaning that you are getting low quality dirty jewelry that can very easily cause infection. How a gun works is that is just shoves the jewelry in your ear. It causes excess damage to the ear, meaning that it hurts much much more, and it takes twice as long to heal. Because it just shoves the jewelry in your ear, it forces the cartilage to shatter. Then your body has all of these puzzle pieces of cartilage that want to go back in place but they can't, because there is jewelry in the way. This causes cartilage deformation, makes it very very painful for weeks if not months, and takes 12 months minimum to heal.

When you get it done with a needle, it is almost painless. IT removes a tiny piece of cartilage to make room for the jewelry, which is why it doesn't hurt nearly as bad if at all. IT takes 6 - 12 months to heal, and there is no cartilage deformation. Not only that, but everything is perfectly sterile, like in a hospital. An autoclave is used to sterilize everything and all the tools. You can't put a piercing gun in an autoclave, it will melt.

IT is more expensive to get it done with a needle, but good things are not cheap and cheap things are not good. You want this piercing to heal well and look fantastic, you should get it done with a needle. you won't get that with a gun.

none

a needle is better and it won't shatter the bone

NEEDLE, guns are not safe, a needle pushes the skin out and is cleaner, therefore making the healing process normal and less painful and less chance for infection. A gun has a chance of causing disease, it does not push the skin out and causes infection easily it does not heal easily or safely and it is painful, get a piercing done by a real professional piercing and tattoo place and they will tell you more about it, do not get your piercings done with a gun, i got mine done with a gun a long time ago it had a big big bump and it was one of the most painful things ever, after a month i took it out because i couldn't deal with the pain that was two years ago and the bump never fully left my ear i have the cartilage on my other ear pierced and it was done with a needle by a real professional and is 7 months later fully healed and no pain.

I would think an ear piercing gun. You have to be careful piercing the cartilage. Let a professional do it, if you do this.