This video, via Midera, captures a live performance with a Korg Radias.
Here’s what he has to say about it:
Created this pad using only the Korg Radias (no effects other than a
little compression/limiting in Logic).
I found that using the master FX in the Radias for reverb was far better than within a patch. I haven’t looked over the routing, but I wonder if its placement in the chain is what causes its different (and in my experience, better) sound compared to insert FX.