need help deciding of chaos army

I am going to rebuild my pld chaos army and i have been fighting with the different combos all week i dont want to be a cheap bastard and go the slaanesh daemon prince lash route even though it is bad as its going to be over used. im not sure if i want to go khorne/nurgle , slaanesh/khorne or what i like the sonic weapons on the slaanesh and the fluff also the improved initative is awesome, khorne is just nasty with all the attacks and i love the feel no pain throwing plasma down like a beast with nurgle. any suggestions
thanks in advance.
ps i plan on playing the list in tourneys just to let you know ....

I have no problems with the Lash Prince just so as long you take two compulsary overpriced and underpowered Noise Marines squads.

I say Nurgle and Khorne. Just the thought of drinking pestulant-filled blood makes you shiver.

I think Nurgle are pretty nasty under the new book.

I also don't mind the Noise Marines, but not for there weapons, more for the Initiative 5.