2004 Gary Fisher Solstice comfort bike (Trek Navigator with a Rockshox coil/oil fork). 1500W BBSHD conversion. Urban South Florida riding.
BB7s with EBC metallic pads and Shimano ICE aluminum core rotors. 203F/180R. Jagwire Elite alloy cable housings, cables, and full metal jacket for the fixed sections. No problem locking up the back wheel because it's usually in the air. 280# all up and 35mph top speed. Adjust the pads about once a week, swap them out about 5 months. Can't think of any reason to stop using them. Lots of water around here.
Tires are Schwalbe Big Ben 26x2.25. Maybe if you ride around in the dirt, or have skinny tires you don't need these brakes.