Try to search a litle bit on the forum cause they have a lot of those topic here!! which car is the best ? which car is more durable ? which car you like the most?? but for indoor sedan i will say those 3 car :
3.Team losi JRX-S
they have other good car and nice car like Hpi cyclone,pro4,Tamiya MSX ect.... i will say take the on-road car that your hobbyshop have some parts and the car that everybody run at your cub cause if you need some tunning tips about your car its good to have some people running them!!!
anyways make the rigth choice and if you have some quetsion im sure a lot of people will answer you here!!