This is strictly my opinion, since I can only recommend what I am currently using (which has worked well for me).....I do not have experience with anything else. I have a Trigger Systems Sump (acrylic sump, well made), a Reef Octopus Skimmer, and a Mag 9.5 return pump. I am currently using two "cheap" heaters and two reactors (GFO and Carbon)....all of which is in my sump. The biological filtration will be taken care of with your live rock, the mechanical via filter sock(s), and the chemical with your reactor(s). I assume your tank isn't drilled, so you would need an overflow box as well (I used an Eshopps in the past with 0 issues). You would then be able to remove your HOB filter all together. The only thing visible in your tank would be the powerhead(s)....which, depending on what you are keeping, may not be needed either since you will have your return pump providing water movement.