Unless you just need the extra gizmos, the T6 Sport is the better deal. Still ask for a discount if this model interests you.
The warranty on the BH T6 Pro is good. Labor is covered for 2 years, parts are covered for 10 years, and the motor and frame are covered for life. This is a very impressive warranty, but the durability of this treadmill doesn't quite live up to the coverage. Keep that in mind before you purchase this model.