Whike they were both inflinced by Garand (John Garand even had a hand in developing the M-14, they are Dissimilar guns. What is the mission or purpose of acquiring a gun? Select the caliber.
If I wanted a 7.62x39, I'd go for the SKS. If I wanted longer reach, I'd go with a 7.62 mm NATO gun and not necessarily the M-14 based action.
Vigilantibus et non dormientibus jura subveniunt. Molon Labe!