What's the best needle size to use for the glute when injecting test e

ive always used 23g blue ones
but have used 21g when run out but hurts bit more
suppose if wasn't great amount of oil could go 25g but would take longer

23g is the go to size I would say

I use a 25g to inject and 20g to draw I can't even feel the needle going in I started with 22g I believe it wasn't very pleasant

Thanks to the both of you for your knowledge,great stuff