Touring - Garneau panniers opinions & experience

Looking at possibly getting some Garneau panniers that Nashbar has on sale right now. Wondering what the opinions are of folks that have used them or similar models from them. Some good prices, but my experience with Garneau items has been inconsistent with whether they are good stuff or problematic.

I'm not looking to do serious long distance loaded touring with a $40 pannier. For the time being, just some weekend trips of 60-100 miles on my single bike, maybe the tandem in the future if my wife gets in good enough shape for it. No camping is planned.

I'm leaning toward the F-30's as they appear to have more external pockets for orgainizing things, but the Beta Streams appear to have a greater capacity.

http://www.nashbar.com/bikes/Product_10053_10052_543334_-1

http://www.nashbar.com/bikes/Product2_10053_10052_543340_-1

I have a set that looks like the Beta Streams. I use them for around town hauling. Easy on and off the bike and stay secure for me even when loaded. Reasonably light when empty and the buckle strap thing keeps them from flapping in the breeze. They don't look water proof to me, but then I'm not touring with them so not as important. They have a couple of thin strap handles that are a bit of a pain as they get loaded up while I'm walking around a farmer's market carrying them on foot for example. No shoulder strap. Overall I think they are a good value at $40 for the pair and I would easily buy them again if I needed something for the same kind of use.

Thanks