I like vinyl, theres definately something solid about physically interacting with your medium instead of just clicking a mouse, but this doesnt mean MP3 should be discarded completely.
Ive been thinking this for a while now (and maybe this is really for the DJ forum) but I, and probaly a few others, are at a bit of a crossroads as where to go when it comes to DJ'ing.
I mean look at the options
1. 2 turntables and a mixer
2. 2 CD decks and a mixer
3. A mixture of the above
4. Traktor with a suitable interface (and probaly a controller)
5. Traktor with Final Scratch, Serato Scratch etc (which again means you need 2 decks and a mixer and your laptop, and your audio interface)
6. Ableton (which again, if your playing out, you'll need an interface and probaly a controller of some sort)
Using Ableton is definately something I'de like to check out in the future but I'de also still like to make use of my record collection.