I prefer the SKS over the AK. I have shot both and I own a SKS. The AK I shot was a full on russian AK-47 with the selector switch. I got to shoot it in both semi and full auto.
I like the SKS because of the longer barrel. I use mine for deer and hog hunting. It also serves as a back up to my 12 ga for HD.
If you just want one as a range toy get an AK. If you are going to hunt the get an SKS.
Check out survivors SKS forum for a lot more details on what to look for in either platform.
What on god's green earth do you think your doing?