Thanks Ben- Do you go up the big hill by your house carrying cargo? Like a lot of groceries?I go up a big hill by my house all the time at the equivalent rear wheel torque of the Vado 4 in turbo (on my Tero X, accounting for assist level and gearing) and it's fine. The main difference would be that my own pedal input is easier because I would be in a lower gear.
If you want speed on the flat, that would be more about watts, and it's harder to find the numbers for the actual max power of all of their various motors (which all say "250 nominal")