I have to disagree. I can ride on my seat all day and still be very comfortable. I bought some raw gel and had someone put it into the stock seat for me. It's super comfy, even for long rides every day for three or four days in a row.Don't go into gel..
Gel will feel at first as comfortable, but it isn't on longer rides.
It will not give you support.
I have done my own saddle with good firm foam because I wanted to lower it.
Foam is the best way to go.
You can also let a good saddlemaker do it.