Hi
Today I got my pair of l-cush pads.
I have tested them on my gs1000i and my gs3000e and my expectations have been met.
The gs1000i have gone from sounding fuzzy, metallic and hollow to having more body and punch and the highs have been balanced, a more gh2 grade type profile, although with a little less punch but more detail. I honestly don't like the sound of the big pads (g-cush) at all.
In the gs3000e the change is not that big, these did not sound hollow but if they lacked, some impact, with l-cush they sound much better. Both lose some soundstage but sound much more balanced to my ears, with better calibrated highs (not as prominent) and more present mids.
This is my opinion, of course, but in my particular case what I really like is that direct and detailed sound and with g-cush it becomes diffuse and distant.
P.S. The tests I have done in ifi micro idsd signature and in feliks audio expressivo mark 2, the ifi is more neutral and feliks warmer but without losing detail.
Loa grade works great on both but better on feliks
Cheers