If you’re going to be running in a parking lot and pretty much bashing around, one of these type On-Road cars is a good starting point. They’re fast, strong and RTR. The price for them is within the reach of a lot of people, they’re great for the money.
If you ever want to participate in any type of “sanctioned” R/C racing you’ll need to get the more traditional type of competition vehicle since there is no “Class” for them yet.
Run it box stock until you need more speed.