Here's a list of most of the additional plugins and things that I generally use in my production: Waves Gold bundle (an awesome set of mixing plugins) Waves TransX (my favorite transient shaper plugin) EWQL Symphonic Orchestra Gold EWQL Stormdrum 2 Olympus Symphonic Choir (Kontakt 5 library) Addictive Drums Serum Massive Absynth 5 Razor Kontakt 5 (full of various instruments and things that came with Komplete 9 ultimate bundle)more
I got Kontakt 5 half price right before Kontakt 6 came out. I really love the Rickenbacker Muted Bass and the Alicia Keys. However I probably wouldn't spend the full $1200 for this whole set. The drums and strings are pretty good and there are some filler sounds but it's a little high I feel for what you get or at least for me for the music I often write. Really up to what you're looking to write and what you need it for.