When I had the choice between the AK and the SKS, it didn't take more than one stressful situation with each of them to decide which platform suited me best.
The SKS took it hands down. Big difference in handling, weight is actually heavier, with a full magazine and it changes the balance as the mag empties. Also, burns up a lot more ammo, even if it's on semi auto selection.
Every SKS I shot at the time would outshoot any AK available. Sight picture is identical and muzzle rise is up and to the right with the AK in a much more aggressive manner. Full auto is strictly a spray and pray option.
I never had an issue with a misfire or a jam with an SKS. AKs can be finicky, highly dependent on ammunition quality. The SKS went bang, every time.
I've never been comfortable with a pistol grip, a lot of people aren't. As much as I admire AR platforms, they just don't work for me and I've put a few thousand rounds through them to make sure it wasn't a one off.
I and others don't like a Loooooonnnnnngggg magazine sticking out the bottom of the rifle, acting like a keel or the fact that I can't shoot it from a prone position, without exposing to much of myself.
There are a lot of good things to be said about either platform. For my own personal use, the SKS platform works better.