I went with baffle with bulkheads because my skimmer has a persistant microbubble problem that couldn't fix no matter what i tried, and in a traditional sump the water coming from the display heads right into the filtersock. i couldn't mod my skimmer to dump the return directly into a filter sock, so the water that leaves the skimmer and the display has to go through the bulkheads and directly into the filtersock, no more skimmer bubbles in display.
The water flows from right to left. The only complaint i have is that it is a bit noisier than a traditional sump. It's really not that bad though, no noisier than the skimmer.