I looked at those choices and many more... I ended up purchasing the Coral view Octopus Triple Recirc Skimmer the TDNW-300. The specs are amazing (12"diameter with 3 needle wheel pumps) the pumps do not draw a lot of power. The height is the same (or very close) to the Bubble King (supposedly the best of the best). The specs I have seen show it being rated for 800 Gal, they were backordered and I just received mine. I have not set it up, there is a guy selling a barely used one for $650. Yes the Deltec is amazing, but about twice the price and I am not sure how much better. I just did a simple wet neck mod on mine, another benefit of a less expensive skimmer. This should now out perform the other skimmers available. The construction was great, cell cast not extruded acrylic. Hope that helps.