Piercing material

Hey guys. I had my ears pierced (normal earrings) at the beginning of March. At the moment I have titanium earrings.

Now the ears have healed perfectly, just like my previous piercings. Unfortunately, I'm a bit unsure which material I can use now. I have a nickel allergy, but I don't want to have small plugs in my ears forever.

Which material would be best? What should I look out for? As a child, my pierced ears were constantly infected and of course I don't want to go through that again (My parents didn’t know about my allergy). My piercer said the safest thing would be titanium, another said that was nonsense and silver would be the best. All in all, I am now incredibly unsure.