Not to be rude, but a couple of definitions:
A spot weld is what you do with a welder. A cheek weld is where you put your face.
The cheek welds on the sidefolders are somewhat better than on the underfolders, but they are still far from ideal. The fixed stocks are the best. Regardless of your cheek weld the gun will not be an accurate gun, no matter how nicely it is built or how much you paid. It is not designed for accuracy and even if you shoot it from a Ransom Rest it still won't give you any kind of decently tight group.
If you want a sidefolder or underfolder AK, you want it because its fun to blast with and looks evil as heck, and because Diane Feinstein doesn't want you to have one and its your duty as an American to piss her off. If you are looking for a good cheek weld and great practical accuracy with iron sights, lets start talking about 20 inch AR15s, because no AK is going to make you happy in that department.