Ansmen have been making off-road cars that I'm firmilar with. Basicly there a sticker company to my knowledge, there off-road car was just the team C buggy, just like the TQ car. The last onroad ansmen I saw seemed to me like a TC3, but its been a while since I looked.
You might want to look at the sakura S car, cheap, and you can still just about upgrade it to be there pro car if you decide to down the road. Just remember with a cheap car though you normaly have to carry a box of spares around with you that you dont have to do if you drive something your hobby shop supports.
As far as roll bars, you can set up a car to run without them. The setup is easier to atain with roll bars, but I have my TC6 and my TC3 set up to run without roll bars, there very comfortable to drive 17.5 blinky on our local carpet and I'm a horrible driver
Edit: just went and looked at there new car. Its not a rebadged TC3
may have been somthing else I was thinking of. Could have been thundertiger since they are associated. Car doesn't seem too horrid, I dont know if it would ever really be competitive though. I still say the Sakura car would be a better direction to try. I've also been looking for price for the ansmann and the two places I found that did sell them dont have any in stock and claim they've been discontinued