I just used a pair of Lonepeak P-150s on my trip, and my friend had the P400s. The quality is great, so no issues there at all. I used an Ortlieb handlebar bag so I'd have something waterproof. If you want waterproof bags, LP isn't your best option. I put all my gear in waterproof stuff sacks, and that worked great. On the days where we had prolonged rain, we sometimes had a bit of standing water in the bags. I would buy and use them again, but I'd also consider just getting the Ortliebs for convenience. My decision was also driven by weight savings (we did a lightweight credit card tour, i.e., not fully loaded).