Regal w/ Ti rails:
http://cgi.ebay.com/SELLE-SAN-MARCO-...item5636c81616
Fizik clone:
http://www.nashbar.com/bikes/Product...2_10000_201504
Both are wide at the back, providing for mulitple kiester positions. The nod for comfort, lightness, and cost goes to the clone, but the Regal's not far off.