man, the need for a compressor is one of the biggest reasons i resisted getting into pcp shooting. i live in condo type place, on the top floor, and pretty much any option is probably going to be audible for the neighbors. unfortunately for me, there is a place that sells tanks and gives free refills that is only 15 minutes away. in the meantime, rifles have gotten much better over the years i have been waffling. i still want the independence of compressor, even if i have to go out run it off my car.