To be honest, anything you buy will break if abused or not used as intended.
I have an outcast 6S, ERBEv2 , Savage Flux HP, Stampede 4x4 vxl I run on 3S and converted eJato I run on 3S. All of them have their own headaches. Pound for pound, the ERBEv2 required the least amount of aftermarket... but I never ran stock electronics as I got mine used and used stuff I had.
If you want the toughest out of the box, then likely a Tekno
MT410 (outcast 6S size) or Tekno ET48.3 would likely be it. They use top notch parts for everything, but it comes at a high premium. And you have to build/paint them as well as get your own electronics/wheels/tires.
If you want really good parts support and customer warranty support, then arrma or traxxas is a good way to go.
My issues with the arrma 3S/4S line is the arms are kind of fragile, the diffs are composite, the axles blow apart unless you really fiddle with the slipper.
My issues with the 6S line is the chassis is made out of butter grade alloy, the diff ring gear is thin with small teeth, pinions are small OD with small teeth. Out of the box, if you want to bash them hard, they all need a 7075 chassis, diffs torn town/re-shimmed/filled, alloy chassis braces and better shock towers.
With traxxas, stuffs just retardedly expensive, but generally built ok, except for the 3S trucks having horrible axles. They got better with the 4wd rustler, and I haven't tried those, but the ones on my stampede 4x4 sucked. $120 later and MIP's, and I was happy with those.
At the end of the day, kind of depends on what you want to do with it. Do you want to run in grass a lot, at a track, just bash around at skate parks/bmx tracks? If you run in grass a lot, I'd lean towards a 6S truck as they are typically a bit taller and have the extra horsepower to deal with the drag.