I am not afraid to try them. They have good ratings.This is the unit I bought to replace an AI Nero, which replaced an MP. I've been impressed, and the price makes it even more impressive. The in aquarium profile is almost identical to the Nero.I've used MPs and Neros for a while. I've had fever problems with my Neros but they still are not perfect. I actually bought a cheap low profile unit from Amazon and it was 1/5 the price and has outperformed the Neros and MPs. It just doesn't have an app.
JEREPET 4200GPH Wavemaker Pump
There are some things in this hobby that are totally worth buying premium (sumps, rollers, lights, etc). Then there are other items where you can get 95% of the solution for a fraction of the price.