well....we can look at this in terms of usage, location, durability ,callbacks, etc. myself i use a mix of the two.

but probably the most common approach is time, and time is a bid winner.

one metal CON i did notice recently was that the old work metal box ears screws protruded into the box about 1/16". This was just enough to prevent a rotary timer and some dimmers to enter, had to get the dremmel out...
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