I picked up the new sawtooth 65. Ive had the metcalf for 5 years or so and beat the hell out of it. I got a pro deal on the new pack so between what I can sell the old metcalf for it is a $100 upgrade.
I am very pleased with the update. Way better pocket organization. I love the pockets on the outside of the pack and inside the horseshoe flap. Water proofing is better. And hip belt and shoulder straps are more comfortable and breath better.
I've been taking it on rucks with a total weight of 62lbs and it feels very comfortable (as did the original metcalf). Frame also does not bend a make noise that I have heard was an issue on the last version of the metcalf. Carries weight effortlessly.
I bought this pack so I can take one pack with me on hunts where I primary go out for long days, but sometimes stay out 2-3 nights depending on the situation. I didnt want to have two packs for the same trip and this pack is the perfect balance that packs down for a day hunt, but can be loaded up for a few nights.
The other thing that I liked is that they brought the molle webbing back for the entire hip belt. My original metcalf had that, but the latest version did not and some of molle attachments (particularly kydex holster) needs four molle straps which is why i never considering updating to the newer metcalf last year.
We'll see how the new materials holds up, but my impressions so far is that this is a huge upgrade from previous models with a very thoughtful layout without sacrificing quality.