Both guns have problems:
SKS = open iron slights, hard to scope well. Harsh recoil, unlike the AK which has a better (self-regulating) gas system. Stripper clip loading is a matter of preference: cheap, simple but I've had clips shed rounds while I was loading.
Mini14: fragile rear sight, accuracy falls off quickly, finding reliable magazines over 5 rounds is hard/expensive.
I much prefer the Mini14 operation and balance -- I got one to replace an full-length SKS. However, I was very unhappy with the durability of the Mini and replaced it with an AR15. Either AR15 (if you want .223) or an AK clone (if you want 7.62 carbine) would be vetter guns, IMO. YMMV.