Has anyone tried or gotten this backpack?
http://www.rei.com/product/778469
It is not really ultralight, it weights at 42oz but has a minimalist configuration (frame and top lid removed) at 29oz.
I'm relatively new when it comes to backpacking and ultralight, but want to try to do it "right" (i.e. lightweight) the first time around. I'm trying to decide on a backpack for the JMT this summer and was looking at the 08 and 09 models of the Jam2, then I stumbled upon the REI Flash 50. In the minimalist configuration, it weights 3oz more than the 09 Jam2. Does it have any advantages on the Jam2?

