I have always had an affinity for the idea of "vintage simulators" because I can't afford the real thing and I love old music and the way it sounded. However in practice I've never really found it to be as magical as I expected, though that could very well be that Im an amateur and don't know how to use things best. Often though I will download an amp simulator or something that claims it gets a certain classic sound and when I load it up and mess around I'm just like "sounds like a typical amp/compressor/whatever to me..." Very likely this is just user error or something, it's just been my experience as of late. Oh, also probably should mention Ive never "bought" anything, I download what's free. But even in the free realm some plugins make pretty big claims about sounding like a specific vintage model.