Well, I tried the SS300 headphones.
Well, they were a bit uncomfortable I thought. Reckon the Koss phones are better to wear.
At first, I thought they were no different in performance, I they are mono, not stereo, not sure if that makes a difference.
I did pick up quieter signals better with the SS 300, s. But that could also be because I had my machine running smoother to. I got 6 little nugs, this time compared to 3 last time, and it was over the same ground id already covered.
Hope the headset gets more comfortable with use, will test both sets of phones on the next target.
I think they do highlight quieter targets better than the koss phones.