I had a shock seat post, but removed it when I got my new seat.
First the seat post would sink screwing my riding position.
Second the squishy seat gave me some nasty soreness in places where soreness is a bad thing.
I replaced both, and now I am good to go. It did take me a few miles to get the seat just right, but now I have no soreness, or numbness anywhere. I guess there is something to say about getting the right seat adjustment.
Good Luck