I too, am leery of Jamis.
My buddy has a Dakar 2.0. We are both bigger riders, 240 lbs. That said, I have had zero problems, while he has had a ton with his Dakar.
Blown rear bearings, cracked chainstay, and THREE broken frames. They have been good about it, he has gone through the channels and gotten a new frame each time at no cost, but lots of dialing. Also broke his rear dropout, etc.
Now, he is a big dude, and rides the bike VERY hard, but is not hucking 5 foot drops. If you are more average size, you may be just fine, but I question the builds.....