I get Sew Sampler box. There is a facebook group that you can exchange or sell any of the Sew Sampler boxes or items you don't care for. There is a waiting list on Sew Sampler of five- six months because the items for the boxes are ordered six months in advance and no way to increase the amount of boxes per month.
The Quilty Box is higher in price then Sew Sampler. The Sew Sampler is getting better as the curators have learned what the customers like in the boxes. There is survey email to rate each item in the box every month.
I like getting it every month. Seems it always arrives when I need a little pick me up.