Go with an Ocean Runner: inexpensive, energy efficient, and fairly quiet. Definitely do not go with Rios. Mags are ok, but the Ocean Runners are better and far more efficient. Never had a Lil Giant, but recall reading not so great reviews about them - I don't think they meet the criteria for being quiet. As far as the BEST brand for a return pump it would completely depend upon the size of the tank and how much head pressure. For a tank your size and what I'm assuming to be a sump located directly under it, an Eheim would be the best. However, they are not cheap by any means and Ocean Runners are a reasonable alternative for a lot less money.