Hi, Losi are good but parts are not easy to find here.
So amoung the other two Tamiya... it really depends what you're after because Dynastorm is 2wd,
and is a bit old. DF03 got good review but it's new model and need yet to be announced hopups make it race worthy.
Other folks will probably suggest you some other models such as those from Kyosho or Yokomo.