I would say recirculating only because becketts usually require bigger pressure rated pumps to run them. A NW recirc is more efficient energy wise. I believe they do cost more. Really there is no right or wrong answer to this question though, it's more of a preference and what best fits your setup. I went with a NW and plan to make it a recirc due to the height underneath my stand, with a beckett it would have been a lot taller.