Congrats on the AK. I got a Saiga in .223/5.56 for Christmas last year and did a conversion on it a couple months ago. It really is a slick gun.
I am undecided on which I like better (AK or AR). The AR does seem to be lighter and they say it is more accurate. But, from my personal experience the AR does jam more and that "SPROOIINNNG" in the ear is obnoxious.
I think the most interesting thing about my Saiga is the recoil. It seems to recoil back like normal but then the spring seems to pull it back forward back onto target.