I have them both. I like them both equally in terms of texture of the massage oil. Though they are different. The Bwarm is creamier. The JimmyJane is oilier but a nice oil.
The JJ has more wax and will last us longer. We have it in the fig leaf scent, which I'm not super crazy about. It's a bit too green smelling for me.
The Bwarm holder is great for pouring. We have that in Amber and I love that scent.
I guess if I had to choose between the two I would pick the Bwarm.