I say all the cars on the market are worth the money. I have been racing 8 years(40-45 weekends a year). I have seen the leaps and bounds that the car has grown.
It just a matter of what you are willing to spend. In my case I run the Kyosho Stallion(1st gen). It was stupid priced I thought and now 3 years later I still run the car and feel like it was great money spent. I run against all the new cars and have no problem getting my victories. Its all in what you want and the support you can get.
Good luck,
Joe