Hoping some of you experienced tourers/loaded commuters can help me out. I recently picked up a Cannondale ST400 to use as a commuter, and am now looking at a set of rear panniers so I don't have to strap a stuffed backpack to my rack with bungee cords every morning. I usually carry a laptop, several textbooks and notebooks and various smaller items when I go to class or work (same location). Also, my riding partner and I are planning out a 5 day tour of the Kettle Morraine this summer. As such, I'd like to get something with decent capacity.
Looking around, I see many thumbs up for the reputable brands such as Ortlieb and Avenir, but nary a peep regarding the cheap Chinese panniers you see on eBay. Do they just suck compared to the name brands, or what? If so, what is the difference? To my inexperienced self, it seems pretty difficult to screw up stitching a bag together. $30 for a pair of panniers is a very attractive price, but I've experienced Chinese quality control before and don't want to get something that'll come apart at the seams with all my stuff in it. In case someone has experience with this exact model, the bags I'm looking at are these:
New Black 28L Cycling Bicycle Bag Bike Rear Seat Bag Pannier with Rain Cover | eBay