I went through all the same pains when i first got my workshop, in the end i purchased a higher CFM unit, it is only a 50ltr but with 13cfm it fills the tank in no time instead of being on all the time, this is not a particularly noisy unit but ist not a whisper system either but the high CFM means its not on constantly either. Ive had it for two years now and its had two oil changes and its fine, i run a blaster cabinet and that will push any compressor to its limit, but its fine. Ive seen V configuration systems but they are running in the 80-90db region, thats way too noisey, mine runs at about 40db so whils not quiet its half as noisey as those. mine is a Wolf, from china i suspect but its not let me down yet!!

Rick