Pricking Irons Upgrade Discussion

Hello everyone,

I am looking to upgrade my WUTA pricking irons to something better (high end) ones.

After all that was said on here and other places I still can't figure out which is the best option to go for, I looking for ones which are extremely high quality and go through thicker leathers( Lancette Rolled Handles etc) easily but also ok for thin leathers too.

Which ones would be recommended after all the months / year you have been using pricking irons?

Sina Broks?

KS ?

4Z?

Others?

Thanks and i look forward to hearing your thoughts.