Communist Turkey path is nice giving many production and pp boosts, also giving 1 winter expert general. As Turkey is bordering Soviet it will station many troops around that will help you in wars.
And after conquering whole world you can just go Turan to annex Soviets too. Turkey can core whole Kurdish cores in middle east, Azerbaijan-Georgia, some parts of Iran and Syria, whole Turkic regions inside Soviet, hell even some regions north of china.
And can assimilate Hungary, Finland, Estonia for more manpower.