How much weight do you plan on carrying?
If you can't fill these packs, then I don't recommend either. To me, the design of each requires a full load to carry comfortably.
As far as durability and comfort in relation to weight.. well, I find the opposite to be true; at least for the 2008 models. I would suspect the Exodus to be more durable, as I've explained in a previous post somewhere if you search.
The fixed hipbelt pockets of the Conduit is a luxury that is tough to pass up though.
Be aware that the Conduit is designed to ride a little high -- which means, as a skinny guy, it requires a little bit of adjusting as I walk - especially with very light loads.
Though that all sounds favorable for the Exodus; but I'm not lying when I say I favor the Conduit for trips - mainly because of the convenient hipbelt pockets.
You can't go wrong with either though, so long as you are using them for their appropriate purposes and loads.