The Nomad was up on Chainlove earlier today. I forget what it was up for though.
If you already have a bladder, or know of somewhere to get one cheap, take a look at the GoLite Rush. Capacity is halfway between the Drafter and Nomad, and stays in place better than any other pack I've ever worn. The downside is that the bladder isn't included. No helmet carry either...not sure if that's a selling point for you.
http://www.golite.com/Product/prodde...x?p=PA5268&s=1