Save your money and get the H450i if you like this one. There isn't a good reason to spend $200 extra. On the other hand, save $100 get a warehouse club mill and it will be a better treadmill for less.
Not a good value at $1000. If you can find it on sale or get a discount, that's when it starts making sense. Otherwise, head to the discount clubs like Sam's or Costco.