I read that joule rating is more like the lifespan of a surge protector, some don't even list them, for an example the german brand Brennenstuhl only lists their surge protectors with leak through amp rating.
So I am not sure how to choose and pick one, what is good and what is not, there isn't many threads talking about them for Europeans and reviewing them. Here are some stats an APC model (PMF83VT-GR) provides:
But then there is this model (PL8VT3-DE), a more expensive (in MSRP terms) one and it seems only worse, I am not sure why:
The most useful thing found is this link. Along this I hear that the ts_nm surge protection response is a important one, and that the TVSS and let-through voltage is also important, but I cannot find that info on the brennensthul models, so how do I calculate it or it is not possible?
I see very few models of APC has this UL1449 rating and on amazon.de brennenstuhl has good ratings, but I cannot find actual stat numbers for their products, does anyone have experience with them, I want to know if they actually perform well, for example how does this model performs compared to the APC, I kinda don't see a way to calculate that as there is lack of info, or am I wrong?