I would suggest looking at other members tanks and see what you find appealing , then do a wish list of the fish you want and see if a bb works for you. Give this thread some time and you'll get a better scientific response, I'm only speaking from experience. I'm sure bb had it's advantages as well like weight on your glass, moving your tank, not as much sand floating around .it's a decision I wouldn't take lightly and won't work for all set ups but may be better for some
keep researching and then post why you wanna go the route you choose