Cain said it best - get a T4 with RPM wide bumper & hinge pin brace. Titanium turnbuckles are good too but you can get by without them.
I have all the vehicles mentioned and the Duratrax is by far the worst and breaks the easiest. The Losi RTR is OK but the plastic is a little too fragile and the SS4300 motor has an extemely high failure rate. Also, the chassis has a weak point where it meets the front clip assembly. The T4 is plentiful and durable. They will all break eventually though....
Also, think twice about RTR kits. You will eventually ditch the radio, receiver, ESC and motors in the RTRs for something better.