Hometheaterman, no they are not even close to what the general public thinks about them. They are actually great little guns for what they are. No offense to anyone on here, but most people don't know jack about tec's and go out and buy some 9mm, shoot it, it jams, they say "what a p.o.s" and sell it or just bitch about it. The thing with these guns is, you actually need to READ THE MANUAL before shooting them as it says on the side of the gun. This is quite critical actually.
The KG-9/99 and Tec-9/DC9/AB-10 series of firearms that is blowback operated and when a round is fired, the case bagins to move rearward as the expanding gasses are at the highest point of pressure. When this is going on, a small portion of the case wall is not supported by the wall of the chamber which makes the rear wallthickness a very important factor. Intratec lists the specific ammo that they recommend, an example being 115 gr Federal fmj. An example of a thin-walled casing would be PMC, Blazer, and some others. A chart is provided. Intratec even states that if you do not strictly follow the recommended ammo chart, your gun WILL JAM.
Last but definetly not least, the magazines are very critical. This is actually the most important in my opinion. You should never use a non-factory Intratec magazine as stated in the manual, and has become general knowledge of people into these guns. There are a huge amount of aftermarket tec mags out there and they are all crap. It is hard because the factory mags do not have markings, just like the aftermarket mags. I have learned to tell by the finish if factory or not.
Today I shot 300 round through my Tec without a hiccup, runs badass and I love it. They are fun as hell to shoot and are one of the easiest guns to bumpfire. There is a guy by the name of "Repairman" on uzi-talk that has everything from the original MP9 subguns that go for over $15,000 now (Identical to tec-9 but select-fire and collapsible stock) to full-auto converted tec's and many others. Check link;
http://www.ak47talk.com/forums/showthread.php?t=16413&page=2
Anyways, do like I did and buy one or three. I am saving for a registered bolt FA converted Tec, these go anywhere from $4500 to $6500 nowadays. Hope that helped you out a bit.