In terms of just the lube choices, probably the MAX line. That being said, I have not been happy with my last 3 cubicle premium products. They were not set up well at all.
For a gummy cube, Angstrom really isn't the way to go. In fact, my description of Angstrom is to think of the cube you're getting, but stock. It may start out gummy and controllable, but after 10 solves it will have the fast, sandy stock feeling (without it feeling dry)
Edit: That being said, Angstrom is my favorite line because it best preserves the cube's original feeling, while still being well lubed.