Overall, this is the strongest $799 tread. The major drawback is the poor warranty. I don't fault Proform for this. They are stripping away as much cost as possible and warranties are costly, even on good machines.
There are some corners cut but this machine is a fine example of how much better Proform has become over the past few years. It performs better than what they have made in the past and when you start looking under the skin you realize they are really getting their act together.