Reply to Battery / Komplete / Maschine Stuff - Worth it?

Hi Guys,

I'd like to go more into producing so I have some questions. First of all I'm using Logic Pro 9 and have an Akai MPK Mini keyboard. The gear is all ok but my problem seems to be in the samples/Loops/etc. I have or haven't.

I'd like to do some trap/bass stuff or aussie-style tunes and now the question:
What is the thing about Native Instruments Battery or Komplete? Are they worth the money? Is it easy to get the drums/Synths/etc. I'm looking for?
What's exactly in the packages of them?

Now I'm a lot on the point where I can't get the tunes I want in Logic, even if I use FX, Compressor or whatever. I believe the ultrabeat-samples are just not the things I'm looking for.

Maybe someone of you can help me by the pro and contras for this gear.
Thanks