I have a Red Sea Berlin classic running with a Mag5 pump. Works ok but I want a Remora Urchin. The Berlin needs adjustment and if overly adjusted, it can drain your sump. I have flooded twice becasue I was not paying attention
If you really want one, I sell it pretty cheap so I can get an urchin
Honestly though, I have heard nothing but rave reviews for the AquaC and the Berlin is kind of old school.
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,