IMO the National Executive benefit is the most valuable. National is all around easier/better to deal with than Hertz. While I've never been arrested by Hertz, I've been screwed by them many times - everything from crappy cars and won't let you choose another one to charging for fuel when I returned on a full tank.

I also think there's something to be said for NOT patronizing a company that routinely has its customers arrested due its own errors, and refuses to fix its processes.