ME1+2 should work fine, can’t recall what the issue was with ME3, might just have been some .exe naming conflict.
That aside, ‘better’ is a fairly individual term here. ME2+3 are basically the same games with higer res textures and slightly better lighting, but in turn much worse performance. ME1 on the other hand received a significant gameplay overhaul for the Legendary Edition.
One could very well argue that because of the much, much better performance the original games are generally better suited for VR, just for ME1 using the LE is actually worthwile due to its modernized gameplay.