SA are amazing wether its just the coaster break or the multi speed set ups. im not sure why coasters get a bad rap. it beats having break lines on your rims and a clean look. but i also am not skidding nor racing into traffic. I have only had to repair one and Ive been using coaster breaks for a long while. toss a gucci freewheel on it and call it a day.
the weight is noticeable in the rear but im not a w weight weenie nor afraid to caryy 20-3lbs a few flights of stairs or what ever.