update:

Eset really does work with 0 crashes. Had 0 crashes at all since deinstalling zonealarm und installing eset. Also none of my scanners could find a single threat so the firewall definitely passes security. Also perfect results from shields up and leaktest by steve gibsons tools. And on top of that, the eset firewall seems to be more intelligent by saving or creating rules, while zonealarm sometimes had the problem of programms crashing when having high programm security settings(why i left programm security at low, still noneless a great firewall, well at least in security im not talking about zonealarms crashes), eset runs even on high programm security with no problems at all. This is really GREAT. Also I was astonished how easy eset was, okay zonealarm was very easy to but eset is made even more simple in my opinion, took my only like 10 minutes to fully understand eset.

I can definitely recommend eset over zonealarm, only benefits, i dont see only 1 reason which would make zonealarm a better firewall than eset. Even if you compare prices, as i said before the free version of zonealarm, although its not so buggy and causes less crashes, definitely wont do in security, so if you want a decent security from zonelabs u will need zonealarm security suit which is expensive. And eset actually is even cheaper than zonealarm suit so again eset wins over zonealarm.

Thanks so much for your help, finally no crahes anymore im happy :)