I have owned both an AR15 and a few AK style rifles. Personally I prefer the AK over the AR15. It is just a lot more reliable. You can go without cleaning it for thousands of rounds, and it will never skip a beat. The same cannot be said for the AR. The only AR I would consider owning now is an AR10 (.308). In the long run, you will be happier with the AK style. They are also a hell of a lot more powerful than a AR15. I would go with a milled receiver. Arsenal makes them, and if you go to atlanticarms.com, you will find a few others with milled receivers. Make sure you stay with the 7.62X39 models. Ammo is hard to find locally sometimes, but you can get it online cheap. Expect to pay $700-1000 for a milled model, which is about what you would pay for a basic AR15.