Most satisfying system change in 2017?


What was your most satisfying addition or subtraction for your audio system this year?  Looking for changes in gear, set-up, or listening environment.  What floated your audio boat in 2017?
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Picked up a pair of Klipsch Heresy IIIs..... very much a 180 from my last speakers but very dynamic and fun to listen to....especially with live recordings / concert blurays.   Amazing how great they sound with 40 watts of EL34 power..... hope to build a SET kit soon.
I picked up a very low hour First Watt F5. To my ears,a very,very great amp.