Got a cheap bluetooth dongle so I can get bluetooth audio on my PC.
(Yes I know I recommend everyone have a wireless card in their desktop purely for this eventuality. I have a motherboard that can accept a wireless M.2 card. I just didn't use it. I have plans.)
Anyway. I finally have a good driver stack and hardware to try SBC-XQ. Didn't want to work on my laptop for some reason. I think that SBC-XQ is the funniest bluetooth codec. Sony and Qualcomm put quite a lot of proprietary effort (and patents) behind LDAC and Apt-X HD respectively but Shannon is the deadliest son of a bitch in the world of information transmission so it turns out just juicing the bitrate on SBC to 512kbps comes out more or less perceptually identical to Apt-X HD at 512kbps. SBC-XQ requires absolutely zero other changes and is often completely backwards compatible.
Subjective and objective measurements of SBC at high bitrates.. SoundExpert news and articles
LDAC/LHDC pushes more detail but at its highest bitrate it needs a stupendous ~1000kbps and is, once again, basically indistinguishable from SBC-XQ in all but the most perfect listening environments.
Truly the 320kbps Opus of Bluetooth codecs.