Sargent Cycle http://www.sargentcycle.com/ produces excellent aftermarket seats for popular sportbikes, cruisers and sport-tourers. The quality of the materials and manufacturing are top notch, and the seats are a good value.

The stock plank

Stock Plank: The stock CBR954RR seat is as uncomfortable as they get.

It's hard to imagine what the factory seat designers are thinking in their design sessions. I can tell you it's definitely not comfort. Here's the stock seat from my Honda CBR954RR. If you are not going to ride for more than 30 minutes this might work for you.