I have a a Mystery Ranch Marshall, Pintler, metcalf and I just bought from a member on here the pop up 38.
My brother in law had the Beartooth 80.
In my opinion, are the worth the money….sure. I'd say they are in the top 3 pack competitors.
As others said, the trade off is that some of the packs are heavy. The Marshall is a expedition pack. It's heavy to be able to handle meat, and 5+ days of gear and food. If you ever seen what that looks like, it's kind of ridiculous if you're not use to it.
Something like the Pintler which uses the same frame is a good overnight/day pack, if you like their trizip design.
Meanwhile, something like the pop up seems to do well as a day pack but then can handle large weight change immediately.
They have a lot of good options. You'd be hard pressed to find anyone that's broken a pack due to normal use. I don't have an issue fitting packs to myself, so as far as fit and feel, it fits and feels like any other pack I own really. Holds weight good.