Hi, I've been reading these forums quite regularly and have learnt a great deal from you guys, and hope to continue to learn more from you guys. There are a whole lot of software plugins, apparently some good and some not so good. The question is, if these software plugins work exactly to its prescribed function, e.g. the compressor compresses, the EQ boosts/cuts some frequencies..., then why do they differ? Software plugins are not susceptible to any randomness or external conditions, and work exactly the same way anywhere, everytime. So, if a compresor really just compresses, why is it that some are supposedly better than others? In the world of hardware gear, yes, all the confusing electrical circuits and quality of components can affect the sound, which is why some sound better than others (and are generally more expensive). But surely, in a computer, where everything is digitized and exact, 2 functions with the exact same parameters will always yield the same result? Let's take for example... software compressors. By all rights, a compressor will simply compress the audio waveforms according to the user defined parameters. If you set the attack to 10ms, the effect of the compression should kick in at exactly 10ms after the threshold paramerter is reached/breached, no more no less. It will then tame the ensuing sound samples by the ratio threshold parameter for a fixed period determined by the release setting. All the dirty work done behind the scenes by the software compressor are but programmed mathematical functions. So why is it that some mathematical functions "sound better"? Obviously, no software compressor will ignore the user input paramters and decide that its own parameters produce better sounds. So, given the exact same parameters for 2 software compressors, they should (by right) give the same result. And if we extend this logic to limiters, EQ and what not, most software plugins should be no different. Okay, except maybe plugins designed to emulate a certain sound (a certain kind of distortion, V-amp etc). So... why are there expensive software plugins claiming to offer better quality? Sorry if this has been discussed before, but I have tried searching and so far nothing really answers this question puzzling me for some time. Looking forward to hear from you guys.