I love my VS VF, they hit 159.99 after I ordered, but, I got refunded.
I like the changes to it over my American Made Vaporflask.
Gorilla Glass for the nice flush top look, the USB port is not all wobbily bobbles, the finish is miles ahead of what they have been using on the VS DNA line and the new battery caps!
Its made overseas... however, its still made wonderfully. I can't see any shortcuts that were made. I think simply, they were able to meet scale of economy... which allows them to lower prices nicely.
I think Charlie had a visit to make sure that the overseas factories were upholding the QC, because mine is flawless.