I use niether, I actually use a free audio program, free audio editor, I find much more straight forward than FL Studios, I also find its hard to mix and rearrange loops in FL Slicer and Slicex, and especially Edison(HOW THE **** DO YOU COPY AND PASTE SOMETHING INTO AN AREA YOU WANT, FL STUDIOS NO MATTER WHAT I DO PUT IT IN EITHER WHERE I WANT(WHILE REPLACING THE SOUNDS IN THE AREA I SELECTED)PUTS THE EXERPT FROM A LOOP IM TRYING TO REARRANGE AT THE BEGGINING OR END, IT IS VERY FRUSTURATING), So yea, I like the othe programs.
I'd pick Slicex though if I had to pick from the two even though I hate both with a passion; how can a free download be easy and better at cutting and dicing loops than a real DAW's application? I'm probally not using it right.