David4516,
I recently got my first Makarov and I am very happy with it. I normally carry a Glock23, but was looking for a cheap alternative for those hot summer days when I couldn't conceal my Glock. The MAK is very easy to conceal and there are plenty of good holsters out there. If you are going to use it for concealed carry spend the extra bucks and get a GOOD holster, you won't regret it.
The MAK is VERY accurate and I have shot 400+ rounds in it without any malfunctions at all. It is a natural "pointer" for me and I can shoot it very quickly.
I would stay with the 9x18. There are several ammo suppliers that have good cheap ammo as well as good hollowpoints.