ultimately it's pretty good. if you want significantly better, ultrasonic units are starting to be as affordable as the vac machines. the cheaper nitty made record doctor is a rip. the impeller blades on mine just broke off and they wanted $100 for repair PLUS shipping! it's all put together with glue and the blades are press fit so cannot be easily nor economically repaired. so unless you want to go uS for $600, go for less than $100 for the spin clean.