I have a Serfas Stinger. It has a 60 day money back guarantee. Titanium rails, 190g. $60 at Bicycle Warehouse. The package it comes in says to just take it back to the shop where you bought it if you don't like it for a full refund. Pretty comfortable and much better than the stock seat.
http://www.serfas.com/product_details.asp?ID=61