I installed a Sargent seat (front only) about 5 days ago. I purchased the seat directly from Sargent as their price is as competitive as any retailer and when purchased directly from the factory, the warranty period is doubled. Since then I have ridden several hundred miles with the following observations:
1. I only purchased the front section as I seldom have a passenger and the Sargent CFX seat cloth with the black welt is a very close match to factory. The front seat installed as easily as stock and based on my observation, the Sargent seat pan is superior in overall construction and structural strength. The underseat storage compartment in the seat is a perfect fit for bike registration, insurance documents, etc.
2. I ride with the seat in the raised position (6' 1", 34" inseam). The Sargent seat's rear area is slightly wider and more dished out than stock. This keeps me slighly further away from the gas tank compared to the stock seat and allows me to keep more weight centered over my legs. I did notice that the additional width did not allow me to be as flat footed on the ground when standing in place at a stop.
3. The seat cushion is firmer than stock and with the more dished out seating position, I feel I sit more into the bike rather than on top.
4. The most noticeable improvement was something not expected. With the stock seat, I would start getting leg cramps or knee pain after several hours of riding. With the Sargent seat this is absent. This may be a factor of a combination of the slightly wider seat, more extended legs due to the width, and a more rear seating position due to the dished out construction.
Overall, this has been a significant improvement over stock based on my experience. Also this gave me a good bang for the buck by only purchasing the front seat section.