I had a Lifean 5600K inverter and I have to say that I was disappointed. Found out in the long run that very few shops will work on it let alone PM it. It was pretty quiet and ran everything in my camper. Now I have Companion Honda 2000's. The fuel cells are small but they run my A/C and lights no problem all night. I work at a racetrack in the summer and there isn't a noise requirement but I respect my neighbors. Have not had a problem with them. They are a bit more pricy than most but I will pay for a better product. I guess it comes down to what are you looking to power besides the A/C and are you in a campground or regulated state or national park. Check your decibel levels and start up versus running watts. Good luck.