Well, the primary difference is the size of the mouse itself. The smaller one is still comfortable, though the larger more-so. The full size one also has a thumb wheel on the side, whereas the laptop has a zoom slider. Also the full size mouse has a built-in li-on rechargeable battery; the smaller one takes a standard AA. I’d probably take the larger, but if I always worked from a portable, and in many locations, I’d rethink that and at least consider the other.
Edit: Oh, I don’t care much for the bluetooth, as it’s a drain on the laptop’s battery that I can do without.