I started on Fruityloops a long while ago, and now it’s been gaining a lot of popularity. Laidback Luke, Deadmau5, Afrojack, Madeon, & Arty are some of the big names that use(d) it. I think Deadmau5 & LBL uses Ableton now. Ableton and Apple’s Logic are the other monsters in the DAW (Digital Audio Workstation) world. Logic is used by Swedish House Mafia, Paul Van Dyk, & Ferry Corsten, that I know of. I assume Steinberg developed CuBase to compete with FL Studio, Logic, & the like. I’ve also heard a lot of good things with Propellerhead’s Reason, but have no experience with it. Although I have ProTools & Nuendo, I use them for sound design and post-production in film instead of music production. But that’s just me, since the EDM genre is more loop-based…
My advice to you is to download some of the demo’s, check out videos on Youtube, and feel out which one suits you. Certain DAW’s do things better than others…I also suggest you learn more than one software.