Ubuntu 18.04, 19.10 - linux driver, use claymore 12.0. I prefer use bios modded cards and not see why realtime straps better, its only additional load time and crash risks on my mind.

https://bitcointalk.org/index.php?topic=5123724.0 -  AMD Mem Tweak - tool, which give same result, as rxboost (see --ref parameter), but i can test result in realtime, without restart miner. I`ve recieve ~+0.4 MH/card (rx480/580) with 10...15 value.

Claymore - best miner for me, for exammle, ethminer take +5 watt on Core (from 65W) with little low HR, but i`m change straps, overclock, underclock and downvolt with scripts, now tune memory. Change straps from miner for save some time with less control and understanding

HiveOs, SimpleMiningOs - just ubuntu based distros, which using tools and scripts, created by other peoples, but have nothing unique. It costs some money, i think only reason - their web interface, but i prefer email and telegram notification (easy create with scripts), remote management via ssh.