Ok first off I don't understand why this has turned into a big pi$$ing contest about oxygen systems when the original poster just wanted to know the opinions on a couple of brands at Academy and Bass Pro, instead everyone has to add their useless knowledge. Just look at the facts, we all know that water can only hold so much Oxygen, which diffuses into it at the surface, or is pumped into it. Fact: the warmer and saltier the water is, the less diffused oxygen it can hold, where as on the flip side the colder and fresher the water is the more oxygen it can hold. Then you have to take in account for the CO2 that the fish are putting out, which also diffuses into the water. Anyone who has every used an oxygen system knows that it works simply off of the actions of the bait in the oxygenated water. Yes, you can keep fish alive with just a simple aerator which exchanges oxygen as the water flows through the air. Are they consuming the maximum amount of oxygen that they can hold, no because it is not available. The one factor we cannot control is the salinity of the water, most of the time the bait fish that we carry live in that salinity, but we can control the temperature of the water and the amount of oxygen that the water is holding avaibable for the bait. The more oxygen a fish takes in, the more it has available to metabolize, allowing them to convert more energy, thus making them appear "frisky". Again, yes water will only hold so much oxygen, and if there is anyone here that can tell us exactly what that number is by all means chime in. Otherwise, I'll just continue to know that warm salty water contains less diffused oxygen that cold fresh water, and that by introducing more than 21% oxygen into that warm salty water you will diffuse a greater concentration of O2 than what it had. Combine the cool water with 100% O2 and you will provide the maximum amout of available oxygen in that given environment that the baitfish are in. If that is too much for you to think about, then just continue to use a simple aerator system which will keep baitfish alive, but may also keep them sluggish.