I hadn't thought about the mounded beds drying faster, but I bet they do. I built them years before I knew about hugelkultur.
Depending on where you live and what plants you are growing, a faster drying mound might be an advantage. For me, I try to retain as much water as possible. That's why I eventually evolved to using hügelkultur wood in all my raised beds.
Cedar is very nice and that looks great. If I were a much younger man, I'd consider investing in cedar or all metal raised beds as well. As it is, I am OK with pallet wood beds that might only last 5 years. I am not thinking 20 or 30 years into the future any longer....