How about these?

http://www.carradice.co.uk/sqr-saddlepacks/index.html

I spied one of these on a club ride and loved it. My old Cannondale seat bag I purchased in 1985 is starting to come apart at the seams, hope my next one lasts as long as my trusty friend. I think it is time to start hinting to BF for Christmas is just 8 months down the road. (BF is you see this I promise to act surprised).