I'm surprised bmike hasn't chimed in here as I believe he recently picked up something nice from
Epic Designs. (I saw a picture of his bike with one of their seatbags somewhere) I have the Jandd MW III and haven't been too happy with it. It flops around too much and I find the bungy-things to be a bit of a hack. I have one of
these on order.
[edit]
Thought so:
bmike's bike.