on my 2 macs, HS runs better than sierra (just ask logic pro X); and (on the 10.13.5 beta), am happier with the os than i've been in years (by virtue of the fact that my apps run well, and am not thinking about the os)...
Out of curiosity: are you using Pro Tools as well or just LPX? I went back to Sierra when HS was at 10.13.2 (iirc). Assuming I would probably stick to HFS+ if I were to do the upgrade again, how would you rate 10.13.4 (or 5) regarding playback performance, session load times, CPU usage etc... I do have Logic but I admit I almost never use it as I'm too comfortable and fast in Pro Tools.