Which Dunlop Cry Baby Wah pedal should I Get?

I started looking into a wah wah pedal, and realized that there are a whole bunch of them. I just want a simple wah pedal that will last me a long time. I have seen ones that are Jimi Hendrix, Kirk Hammett, Slash, and so on. Do those sound much different than the original wah? An answer is greatly appreciated.