There were major issues with the first batch of xf150s, with brittle power cords and vibration. They should have recalled them due to safety with the power cords but didn't. However, their customer service is good and the product is now solid with the improvements made. The xf130 was launched with the improvements out of the gate so I never had problems. I was a longtime vortech guy but not going back again. SPS love the broad, gentler flow and dont grow distorted due to hot spots of laminar or propeller flow.