Well for bashing you'll probably have more fun with the hpi. Probably have better luck racing with the traxxas as there aren't really any 4x4 stadium truck classes.
The hpi will be much more difficult to work on due to the many more moving parts, and probably more expensive to maintain.
The jato is so new it's hard to say which would be better. But I like some of the features of the jato. But I think both companies make good vehicles.