no experience with the SWC 160 cone, but I ran the SWC 150 extreme on my 54 corner (about 100 total system volume) and it worked like a champ. Had a few hiccup restarts, from infrequent pump cleaning but aside from that it worked flawlessly all the time. And yes, it was a very quiet skimmer. After previously owning a bubble magus NAC7 as well, the BM and SWC are very comparable price, performance, and quality wise.