I bought this to clean parts and also to de-gas liquids. It works great for both. The de-gas function is actually pretty incredible on its own! I use it to rapidly "age" bulk essential oil in glass bottles. Dissolved gases are instantly brought out of suspension and rise to the surface during the ultrasonic pauses. It's fun to watch. The two frequencies used during de-gas alternate where bubbles are formed in the essential oil. I know this is not how most people will use this device but this is all to say that the de-gas function is not a gimmick. The tank is easy to clean too.
People complain that it takes a long time to heat up. I think it takes a reasonable amount of time. The full tank heats from 15C to 50C in about an hour. People complain that it overheats the cleaning solution. There's a simple explanation/fix. When it is heating but not running the transducers, the cleaning solution doesn't move much so the cooler solution pools at the bottom and the temp reads lower than the temp is at the top of the tank. As soon as you turn on the transducers, the liquid moves around, the temp equalizes and the readout rises a few degrees.
Another complaint people have is that the noise is terrible. I disagree. It's a quieter and softer sound than I would have thought from watching video reviews. It's not exactly pleasant but is tolerable (to me) to be around. Perhaps Vevor could add some kind of sound dampening material but that would probably raise the price significantly (and possibly reduce cleaning effectiveness and/or serviceability). If you have this unit and the sound bothers you, maybe try adding patches of automotive sound-dampening material to the outer case? I keep a folded towel on top of the lid while using the machine to reduce heating energy use and eliminate any rattles from the lid.
The only (minor) improvements I would suggest for the product are:
1. The ability to switch between C and F.
2. Don't program the thermostat to turn off after an ultrasonic cycle (you have to turn the heater back on after a cycle completes [i.e. degas] if you want it to maintain your temp setting for the next cycle). This, combined with the machine's cooling fan running all the time means the solution cools pretty quickly while the machine is still powered-on after a cycle completes. So maybe also put the cooling fan on a thermo-switch so it only runs when necessary?
3. The supplied plastic hose nipple (for the drain outlet) is junk with undersized threads that won't seal... even with a lot of PTFE tape. Raise the price by a few bucks and include a decent brass hose nipple.
Overall, I'm quite happy with the quality, features and value of this unit. Can't wait to clean a small-engine carburetor without fully disassembling it!