No car is dailed on every surface with every type of motor. What makes a car good for stock foam probably isnt ideal for mod rubber.
My $.02 for stock foam is the RDX, its quite good in stock rubber as well, mod and 19t i dont think its as good as some of the other cars out there, namely the T2. I personally did not like the T2 in stock i felt it was twichy, and didnt carry corner speed and was hard to drive fast and consistant. Now had i been running mod I think i would have prefered the T2 since it did turn in hard and with more motor i think the corner speed would have been fine and it would have also settled the car down, but in stock I dont think its currently the easiest car to drive. Parts quality, hands down the best, the T2 is lightyears ahead of the RDX, easier to work on, no slop, but its just not as easy to drive and fast in stock foam.