Has anyone seen or posted the fill rate of the Hill EC-3000 compressor? If my only two choices were between the Hill and the Yong Heng I'd opt for the Hill. However, I am skeptical of the statement that a Hill fills twice as fast as the Yong Heng. It's an apples and oranges comparison, but I'm interested to know more specifications about the Hill. Specifically, the fill rate and what type of piston ring seals are used in a Hill. The biggest compromise in Chinese compressors seems to be the lack of longevity in their ability to build pressure due to o-ring seal failure. Even the overpriced Omega compressor line uses rubber o-ring seals which wear out and are a nightmare to replace by the typical owner.