Will the Rev XT have any difficulty in cutting through Opal Pot Melts? I tried with the Taurus 3 and burned out the motor no matter how slow I went.

The Taurus 3 is meant for cutting thinner material, no thicker than about 1/4 inch at most. The blades are also electroplated diamond so they will wear much faster and bog down. The Revolution XT is a a much more powerful motor with a 10 inch sintered diamond ring blade so it will cut through material more efficiently.