I was wondering which size crop needle you would need for a budgie and cockatiel. some places I find say a 18 gauge for budgies and a 16 gauge for cockatiels where others say a 14 gauge for cockatiels and 16 gauge for budgies.

what do other people who use crop needles use? also which length 3" 2" or 4" and which seem to work better curved or straight?

I would like to get some for the just in case measures.