Hi , you can pickup a secondhand team associated b5m for around that price depending on seller, there good cars and are quite new so will be arounf for a while, the yokamo bmax2 is a great choice too and have been going up for reasonable prices. But those aside check what racers at the track you want to go to are running, they will have a better idea of what works well and if you have same car as some of them getting tips on setup is a timesaver, it also helps in those dammit moments when you break something and dont have a spare you never know someone might be able to help. Hope this gives you a few things to look into to help you decide.
My current car is the B5m, when I chose it only 1 other person was running it at my track so ye didnt take my own advice lol.
Keep a look out on forums for good deals. Have fun