Slaaneshi armies can be very interesting for both Chaos Marines and Daemons.
Slaaneshi Chaos Marine armies tend to be the most versatile of any mono-God force. Unlike Khornate armies which are really only good at close combat, or Tzeentchian ones that mostly excel at shooting, the followers of Slaanesh can be good at either one, or even both!
A favorite Noise Marine unit that my friend uses:
6 Noise Marines
- 6 sonic blasters
This one is all about tearing into lightly armored infantry. Deadly on the move or stationary, these guys are almost always worth their points, despite the small unit size.
8 Noise Marines
- Bolt pistol
- Power weapon
- Doom Siren
7 Noise Marines
- Bolt pistols
- Close combat weapons
These guys are nasty in close combat as they can throw out a lot of high Initiative Attacks while the Champion wields a power weapon to deal with heavily armored targets and a doom siren to soften up just about anything before getting stuck in.