The EuroReef is probably the best plug 'n play skimmer out there, but it's not the cheapest. I would imagine the ASM or Octopus would be equally easy. The AquaC Remora and Urchin work off a different principal and as far as I've read or been told, those are pretty much plug and play too. The trade off being you don't have to worry about tuning it, but you have to worry about larger debris clogging the spray bar jets. Reviews I read say they are much quieter than conventional systems too.