I remember I bought Junkie XL’s percussion and Albion One fro Spitfire Audio. I will never recover form this purchases 
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Heck - go for Hans Zimmer’s Strings library! That’ll hurt even more! 
Terry
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I want to buy his libraries, but one thing always stops me - I don’t want to sound like Hans Zimmer
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When I first encountered Hans Zimmer scores in movies they seemed too dense and overwhelming but a few years ago I was watching Interstellar and suddenly the score starting working for me. I went back and watched Inception again and liked that score even though I didn’t when I first saw it. I’ll have to work my way back to The Lion King 
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Native Instruments’ Reaktor. Bought it in 1999 and have followed it closely since. Quite certain that it’s in every single track I’ve produced since then, in one form or another.
The user library of 4000+ synths & FX is an endless source of joy, too!