Upgraded from an i3 2130 that lasted 7+ years, was originally going for a 3700x + x570 Taichi Build. But was lucky enough to come across a 3900x at MSRP.
Couldn't pass up the extra headroom for future sound rendering/content creation/streaming/gaming.
Had some issues with RAM compatibility out of the box, had to flash latest GIGABYTE BIOs in order for the motherboard to recognize the RAM.
Other than that, it seems to running up to par!