70L is quite a big pack for a trip less than 2 weeks IMO, unless you're carrying for two people, that is.
If you want a mainstream mfg, try GoLite for their Pinnacle. It comes in various sizes. You could also look at their Jam, which is slightly smaller. I bought a new Jam online from Uncle Dan's for $69.99 a few weeks ago. Shop around, there are a lot of good deals right now.
Also, for UL or SUL, try the myriad of cottage industries guys out there making super nice packs, but of course you'll pay more.
In the mean time, just a suggestion, you might look at how to get your gear lighter/smaller, so you don't need a 70 L pack.