DB's are like cars, best to buy one to meet the driving needs.
If running technical water with lots of white water, drops into holes and rock consequences, tin would be preferred for both it's durability and greater bottom rocker = handle standing waves and hole drops better, pivot direction faster.
If primarily used in moderate white water and still water Clack hands down, as with it's lesser bottom rocker = easier to row, faster under electric power, flatter floor to stand on while stand-up casting.
Match the boat to the needs