I like them both, because the Autosound disc has discrete tones from 10 to 98 Hz, every Hz. But I also like the Stryke disc, because it is 1/12 octave to 1/6 octave discrete tones, I think from 20 Hz up to 480 Hz or something.
One other thing, most PC sound editing software includes the capability to make your own test discs. For example, this is what I've used in the past: