Phenibut by far is the best sleep aid for me. It destroys everything else, including benzos.
With benzos, sure, I can take enough to pass out. But I'm literally knocked out; you aren't reviving me, I'm passed the hell out.
With 1500mg phenibut, my brain turns off enough that sleep comes easily and unlike most other things I've tried over the years, I STAY asleep for a solid 8 hours without stirring. That said, if I had to get up for some reason, I certainly could. I'd be a bit groggy but OK.
I've heard stories of addiction and withdrawal with phenibut, but I've never had cravings for it personally, beyond it's use as a grade A sleep aid.