AK-74s have a reputation for having better accuracy than the 7.62x39mm guns.

Trouble is that there are a lot more good options in 7.62x39mm in this country than 5.45x39. And most of the 5.45 ammo that’s imported any more is garbage. Of course, so is most of the 7.62x39. More to the point, there is no Lapua 5.45x39. Nor is there Winchester or Federal or GECO or Fiocchi. And I haven’t seen Hornady 5.45 in ages.