The seat exchange was one of the FIRST things I changed. I have never found the stock seat on any bike I've had to be satisfactory. And rarely have I found the manufacturer's upgraded seats to be any good. The Sundowner is great.
Got a Sundowner Deep Bucket last week. A big difference for me a major difference for my wife but man is it ugly compared to my stock SG seat. It does look a little better with the back rest on. I an now thinking about getting the solo also.