Each has it's pro and cons. I still have some things to think about for sure. I like the cleaner look with the return coming out of the overflow. Since it's 2 drains the likelyhood of it clogging seems to be minimal. I can always implement something I feel to help reduce the chances of a clog. Plus an electrical component to shutoff the pump in 2 manors. If I run dry in the sump which is unlikely, put a float that shuts off the pump if ran below a certain water level. Also a overflow switch to shut off the pump if water rises too high.