I bought a pair of the $75 Moto Skiveez padded motorcycle shorts, but they were a total waste of money for me. Wore them a couple of times now they are languishing in a drawer in my motorcycle room. Also tried a gel cushion, was real squishy, and felt unstable while cornering, gave that to a fellow rider from Chicago while we were at a motorcycle rally in NC.
I went through 'that' also.
I even have an original ST1100 Saddleman Travelcade gel set when they were considered 'custom' seats (had a metal base instead of plastic).
It came with a free 'bun burner' if you left it out in the sun for a period of time!

For all of the money I spent 'trying' stuff I spent over half of the price of a RDL.
On my two trips to Russell, I had a few conversations with them about seats and seat construction.
What I came away with was quite simple - Any type of foam, gel, etc. will compress over time and that applies pressure in unpleasant places, causing discomfort.
IIUC, the RDL remedies this with their seat 'spring' which is patented and cannot be copied.
But also remember that seat preference can be like mattress preference - some like a soft mattress, some like a firm mattress.
IMO, RDLs tend to the 'soft' side, Corbins tend to the 'hard' side.