If you are all new I would suggest you buy a car and build it yourself. It will teach you the in's and out's of your car...how everything works. It is much more difficult to try to figure out what someone else has done to a car if you have no experence. With a fresh box stock car you know where you are starting from.
As far as the high end cars go, don't waste your money. Sure there is no question that they are better, but the only people that can get that much out of a car are the people that you see in the magazines. And to tell you the truth any of those people would stomp the best club racer with a TA-05 or cyclone S.
You need a car that is good at the club level is going to take some pounding, you will be on the boards quite a bit as you get up to speed.
See what kind of parts are local available at the place you are going to race, you don't want to break a part that will put you out of the evening. And you always break the part you don't have. If they don't stock parts get something that you think you will like.
Personally I think the worst thing to do is buy a used top level car, you need to start at the ground level, and it is a very good feeling when that TA-05 passes that guy in the $500 Xray.