I'm just wondering what version we should be using for speedruns?

I'm using version 3.1.5 on Android and it doesn't seem to have the ability to do Knuckles + Tails, or the elemental shields (like in Wersters S+T WR)

Also, is it better to use an emulator and force 4:3 aspect ratio to make certain bosses easier? (I've noticed Aquatic Ruin zones boss travels further in widescreen than it does on the classic S2 version)

[edit] okay, I found the K+T option and the elemental shield option behind the no-save cheat menu. Just want to know what the speedrunning setup should be. Elemental Shields yay or nae? Or all monitors randomised (since that's an option too)