I will not address these here. I'll stick too what I know. In SB you bend narrow strips around a form. What this means is that with SB you can make smooth rounded shapes. Both shapes are good.
Some people prefer a hard-chined boat.
Weight for both is dependant on how much glass is used. There is less setup involved and somewhat easier finish work. SB involves a series of easier steps but requires more patience. SB is more forgiving. Glue the deck and hull back together, Sand, Varnish, go to 16 and repeat until bored, Paddle.