I picked one up yesterday for $549, and shot it some today. I love it, and it's my new acreage gun. Light, short, handy, points well, cheap to shoot, and it'll be all I need for around the house and the 2.5 acres I live on. No, it won't do what a .223 or 7.62x39 will do. It won't consistantly hit, with authority, past 100 yards. But theres something the bigger guns can't do that this one can: Allow me to practice off the back deck with irritationg the living crap out of family members that are in the house. My ears won't ring if I shoot it without "ears". I can afford to feed it. A LOT. Sure, the Ar's, AK's, (even SKS's, thank you!) have a place. But so does my CX4. And it does it quietly, reliably, and accurately. (I won't even mention "Class". Kel-Tec? Really?) If I need a bigger gun, I'll grab it from the safe. I just don't typically need a bigger gun.
(Oh, Howdy!....I'm a new guy!)