I bought both the Commuter backpack and the Go Getter Tote. I don't have to carry my 15 inch laptop regularly (which fits in both, but fits in the tote better) but I do regularly carry my iPad. I have an 18 month old, so I needed something that I could use as a daily bag and a diaper bag as needed. (Diapers, snacks, wipes and a water is all she needs now)
The Commuter bag never ever leaves my side. I can fit my 30 ounce Owala, my 10 year olds 30 ounce Owala, my daughter's cup, my iPad, my Erin Condren planner, diapers, wipes, daily essentials and still be able to find everything when needed.
The bag is comfortable and very very stylish. It never feels heavy, and doesn't cause my any pain with my back problems. Literally the best decision I ever ever made.
It did take a while longer than anticipated to come in (I ordered on a Monday and received the bag 17 days later during February) but I could not function without this bag.