An interesting read for those who care about advanced stats. REAL +/- takes some heat (I've read that Defensive BOX +/- is useless too elsewhere.)
I use PER as a quick and dirty offensive stat, knowing its faults, and RAPTOR, for its potential. I distrust any strictly plus/minus stat, no matter how you massage it, and single-game +/- stats are meaningless.
RAPTOR was 4th, LEBRON 3rd, EPM 2nd, and DPM was the top-ranked all-in-one stat.
https://hoopshype.com/lists/advanced-stats-nba-real-plus-minus-rapm-win-shares-analytics/