RE: Your opinion on the 1/5 Dirt Buster RC from V*Tech RC?
As far as I know, nobody has expressed any feelings or experience about that particular branded model, however, one can't help but wonder if it's not the exact same car as the King Motors Baja clone, which is reviewed and discussed in detail just a few threads below this one.
I strongly recommend you buy the real deal, unless budget absolutely precludes it.