Depends on who you ask. Some people like one or the other. I prefer platys - quick connects with water filter, and with the big zip you can undo the zip on top while you filter to keep the pump from blowing up the platy like a balloon. The big zip has a large opening on top that allows you to clean without using a coat hanger apparatus. I've abused mine, pretty much, no leaks.

I have an older Camelbak but wouldn't get one again because it requires another person to hold it while i'm filtering water into it.