We returned the Classic L for the Pro. The backpack style seemed easier to carry as it evenly disperses the weight across your back, and it just generally works better for our family of 6. We’ve already used it on a hike/river day trip and a week long beach trip. It’s been amazing. Things have been kept cold and keeping it clean only takes a quick hose down. It drys quickly and rolls up great for easy storage. I’ll be purchasing the dry pack soon!