I've been happy with this air pump, but I am running my whole fish room with it. I don't have a huge number of air drops, but it's running my fry rack tank (4-5 drops) and about 10 additional drops in tanks. Mine is the 32W version, but I bought a 40W to have just as a backup. It eliminated about 7-8 smaller pumps and dropped the air pump sound almost to zero. It's surprisingly quiet.
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I've also had really good luck with these heaters (though the 500 watt heaters are not 500 watts, they're more like 300). Hooked up to an InkBird they're running in more than half my tanks and I've always got one or two in a box as backups to the other heaters that I have in service. I have no experience running them without a controller, but I would guess that their thermostat knob is as terrible as every other one I've ever used.
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