Quoted from swampfire:The Stern coils get hot and sometimes buzz. It doesn't make that much of a difference to gameplay, but all things being equal I wish Stern would license the patents so they could switch to the B/W design
B/W use the typical dual-coil, three lug system, where Stern uses a single coil, two lug flipper coil, simplifying the hardware. I think it may be more reliable in commercial settings, and require less maintenance. The EOS can drop off entirely, and the Stern flipper will still function.