Would I be better off purchasing a H910 or H918 device if I am aiming at using this rom? H910 comes guaranteed factory unlocked, H918 seems a bit more hit and miss.
Also, is the old 2016 method of unlocking bootloader + flashing TWRP still the accepted method or has there been an update. Those 2 threads were the only ones I could find. Many thanks for any reply!
If you're getting a LG V20 now, its not the best if you want to stay full stock. Super ROM, is still on Nougat not Oreo and I don't know when Oreo would be coming. If you're still determined to buy a V20 and stay on stock ROM, then Alpha - Omega is the better version for right now. I'd highly recommend LOS 15.1 or LOS 16 , they have much better support and are on latest versions in terms of actual Android and highest security version. If you still haven't bought a V20, just save up and get a V30 or newer non-LG phone. If you still want a V20 though, I can't speak for the H910 but the H918 has been working fine for me, though all versions of the phone are getting slow and need some replacement.
Click on the link in the op which takes you to the web page look under the faq section, also I believe there is instructions in the aroma installer