Used these AND the Amazon branded ones for a LOOOONNNNGGGG trip to Europe... Although there is really nothing wrong with them, my family felt that the Amazon branded ones were cheaper and better built.
Pro's: - Safely stuff the crap out of these things! Zipper's will hold - Makes traveling sooooo much easier- Especially when the TSA decides to open your bags to go through EVERYTHING to find the little bottle of shampoo you forgot about.
Con's: - Really nothing. Personal preference is to go with the Amazon generic stuff due to overall cost and quality.