I use older Mavic T520's with 36 spokes. I am a heavy rider (260) and so far no wheel truing needed after 2000 miles. If you ride enough, there isn't much difference between the top rims, especially since rims are kind of disposable, in a sense. Unless you are using disc brakes, your rims will wear out the sidewalls before the spoke holes wear out, unless you never ride in wet, gritty weather.