Trimmed VS Trimless: Electrical

The new 22 electrical outlet by Bocci, pictured up top, got us thinking about flush trim and how desireable (and laborious) it is in modern architecture. We know we would love flush trims in our own home; from the base of the wall to the frames on the doors. But we also know that the trim in older spaces was often beautifully embellished and for this we treasure it even today. So, we wanted to round up a comparison between the best of the trimmed and trimless worlds of modern and traditional architecture. Today, we start with electrical trim, from switches to power outlets...

What's your preference - from an aesthetic or practical point of view - trimmed or trimless?