Yeah,
I would defenitely recommend one. The wavetable you can create by slowing a sample down are nasty

(i mean that in a good way!) . Just getting into it, as I had to work all weekend. But the 303 filter is juicy, as is all the amp modeling on it too. I am going to load in some of my own samples tonight and mangle them. Once I get some webspace up and running again (notice the avatar is gone), I will post before and after sounds.