Treadmill: How big a motor?



Hi, folks. I just burned out the motor on my 10-year-old Spirit
Treadmill. The friendly repairman says he can put a new 2.5
horsepower in for about $425 or a used 2 horsepower for about $225.

The difference, he said, will not be noticeable at the level I use the
machine -- two or three 30-minute runs per week. He added that, if I
ever stepped up to "training" level -- say, five runs per week -- that
might be more load than the smaller motor could handle.

Anyone got 2 cents to spare on this issue?

Thanks for the input.