I see that you have few posts, but have lurked a long time; therefore I presume you're not a "newbie".
That in mind, you likely should know that a loose definition of the word "best" will result in a very broad, nearly meaningless set of answers.
So - if you intent to run 7.5k mile OCIs (which is very reasonable in today's lube/filter world) then I'd say the "best" filter is the least expensive of all of those. I cannot tell you which that would be, because I have no idea of the sourcing and pricing you'll be getting in Germany.
ANY of those filters will more than suffice; they will all do a great job at that projected OCI duration. In fact, I suspect they all could reasonably surpass that limit. I recently ran a Purolator Classic (white can) "normal" filter in a 10k mile OCI. UOA came back fine.
Buying a "better" filter (as seen in a lab ISO study) does not directly translate into "better" wear protection in the real world, under normal conditions. While I completely agree that filtration is very important, I'm trying to confer to you that once a minimum threshold of solid performance is met, using a "better" filter will not return any tangible evidence of reduced wear.
In short, if you ran several UOAs with a "normal" filter used at 7.5k miles, and then several with a premium filter at that same limit, the typical normal UOA variation would be much greater than the neglible difference in wear reduction from the filter selection. The "normal" sigma noise would be greater than any tiny benefit the uprated filter could ever hope to provide. I say that because I've got literally thousands upon thousands of UOAs to back that up with macro analysis. You could run your own series of micro-analysis tests, but that would take you WAY longer and WAY more money than I suspect you'd be interested in putting into this; it would take 450k miles of tests, with no other variables in play. I doubt you're up for that.
In greatly extended OCIs, the filtration efficiency and capacity most certainly are in play and would make a much greater difference. But few folks realize that wear is often still retreating, even when moving out towards 15k miles. That in mind, at 1/2 that interval (being 7.5k miles) both the lube and fitler are still way under-utilized.
Of all the data I've collected and seen, the effect of finer filtration from a "better" filter will never return any tangible benefit in a "normal" application. That is because the filter is not the only player in wear avoidance. Both the add-pack and the OCI duration also have a major influence. In fact, they actually have MORE influence over wear, once the filtration meets a safe minimum level.
Conceptually, filtration is important only up to the point that it provides a safe operating level, then any gain past that has a very steep law of diminishing return. After that threshold is met, it is the OCI and add-pack that control wear. Since most all decent branded filters can provide that safe minimum level, then the "better" filters really cannot distinguish themselves in real world performance. They might be "better" in the lab, but that does not directly translate into reality in the crankcase.
So - buy the cheapest, decent quality filter you can find and maximize your savings. Please note that I'm not suggesting you buy the cheapest no-name filter on the black market; that would NOT be my suggestion. I'm saying that choosing the least cost filter of several reputable brands is the key. Get the difference!
That is my definition of "best" for you application.
Every company wants to make their product looking good.