They were checked with a set of another companies injectors which I have while my head was being redone last fall as I wanted to ensure my fuel system was corrrect.
Fresh out of the box and never installed...
Sac was burnt from drilling process,pizzed at 220bar and IF they popped it was only at 250bar.Very disappointed as they were new and nothing more than a Marine injector which was what they are not advertised as.
I've only used one brand and you didn't mention it. I've have 180hp Extrude Hone tips for going on three years..... the injectors have been tested 4 times and have been within specs every time. Couldn't be happier with them.