I never really liked Mini's much. My recent purchase was a side-folder AK-74 Tantal model (Polish). I used one in Afghanistan, and the things are awesome. They're a little bit more accurate on the "rapid-fire" than the AK-47 (not on auto, just semi-auto) just due simply to the smaller round-> 5.45x39mm. Ammo isn't all that easy to find for it though........I mainly have to use Russian surplus ammo that's not expensive at all, it's cheaper than 7.62, but it's ALL corrosive. If you clean your rifle regularly, it's no big deal.
Also, as for parts availibility, I'd go for an AK or an AK variant...just not a WASR-10. Don't get anything that has had the magazine well dremmeled out to accept a double-stack magazine. They fit sloppy and I've had a few magazines that won't stay seated well in them.
Personal opinion for what it's worth---> I'd keep what you have and save up a few hundred extra dollars a bit at a time in a friggin drawer or your ashtray in your car and just buy an AK. Prices have allready started going up, which is why I just bought the new AK.