I have had (4) YH, a New Warrior, a GX CS3, & a GX CS1 clone.
The CS3 runs for several hours each week, filling my PCP guns, and so far working well after 2-1/2 years. The CS1 clone is backup, so I don't get stuck if the CS3 were to fail.
The New Warrior, I purchased needing repair, from an air gun distributor who had used it in the shop. It was purchased out of interest as I wondered if it was the same as GX CS4. It turned out to be a YH type in a more sophisticated package, sae as Benjamin and some others. I have no idea how many hours on it, but obviously very many. The problem was easily resolved without special parts, and I have lots of photos of the internal if anyone is interested.
The YH...if you can't say anything nice....hmm, I used mine for filling air guns directly but mostly to fill my 45-minute SCBA tank, once or twice per week.
One failed immediately (burned connecting rod big end-by the symptoms), three failed due to piping air leaks, check valve issues, several broken connecting rods, several burned out connecting rod big ends, etc.
I'm a retired automotive tech, engine machinist, small engines & marine tech, and Power Engineer so very qualified on these kinds of mechanical systems. I had decent service from one, converted one to closed loop cooling to make it portable, but they are quite crude compressors, which is why they can be priced so low.
I wouldn't choose one for my type of use, or if I went back to SCBA.
The CS3, rather than home compressor and SCBA tank is also much to be preferred for my use as can plug into power at our club, rather than needing to fill a tank, etc. The CS4, New Warrior or compressors in that size and weight range are far less portable. That's why I didn't keep my New Warrior, despite that it filled my guns more quickly than the CS3 or CS1 clone. We have also had two power outages during which I used vehicle 12 volt power for the CS3. It's an 80 mile round trip to our club so going home to return the next day is not ideal.
I recommend deciding on whether one will need to transport the compressor to fill guns, or use in a fixed location, especially for filling tanks because these are different compressor applications for which quite different compressors are better choices.