The monster effects were a lot better in this installment than in its predecessor. They played around a little bit with CG effects (witch were not composited very well; they always seem too bright for the scene), but mostly stuck with the physical puppets (which looked pretty good).
Tremors is a classic, but my favorite out of the franchise would have to be Tremors 2: Aftershocks.
I give this move 4 Pounds of C4 out of 5.
It's Bert! hur hur