All of the Saiga that I have seen function very well. They are however, not very pretty and I question their long range accuracy for a cartridge like the .223.
"An armed man is a citizen, an unarmed man is a slave", Ceasar
Well, I have a Saiga 7.62x39 and use it with a KOBRA red dot sight. It does very well and has never jammed. It's made in the Russian AK factory. I probably wouldn't shoot it much without the red dot.
I don't know why you would want one in .223 though. Save up for an AR.